This film has on paper a phenomenal cast. Truly world class in every aspect. While I do feel there were some miscasts throughout (I would have replaces Paulsen with Kristen Wiig, James Corden with Martin Freeman, Armitage with any actor that can muster actual screen presence, and Rhianna with Tessa Thompson) the real issue with this film is a paradoxical two fold issue of what it essentially is as a spin off and furthering of a franchise, and a peculiar one as the Ocean's films are at their heart breezy, cool crime capers based around character interactions and comedic dialog and situations rather than hyperbolic chest thumping macho cliches or Bay-esque visual spectacle.
First issue is... It tries too much to be like the first Ocean film with Pitt and Clooney. Second is... It's not enough like the first Ocean film with Pitt and Clooney.
I have to start off with Bullock as Deb and Blanchett as Lou. I get using the Danny and Rusty relationship and style as a template but I am sorry to say... It didn't work for me with these characters or the actresses playing them. Full stop they should have REALLY retooled these two parts of the film. I of course expect to see echoes of Danny is his sister but... She's an exact copy of Danny right down to how we meet her, though I guess it's ironic given my feelings of the film in total that the early goings of Deb in the film are the best most engaging moments we share with the character. She's a better actor than Danny at her parole hearing and the scam she pulls to get her four star hotel stay was a delight to watch. Bullock sold that because she seemed to have an actual inner light that delighted in her character's actions in those sequences. But then... Then that seems to be all forgotten as in an attempt to duplicate the "cool" manner and vibe of Clooney and Co. Bullock simply goes with a characterization that seems less "cool" and self assured and seems more monotone and aloof. The inner satisfaction that was there when she conned her way out of jail and into a suite just dies and is never seen again. What's worse is... This charisma drain soon infects the other ostensible lead, Blanchett. Cate is sad to say mostly just dull and it comes down to trying to ape Pitt. It doesn't hurt that Pitt and Clooney also had Damon's character to verbally kick around and use to espouse lore and exposition. This led to some deft verbal play and some insight into the characters. Here I will again use the word aloof to describe everything about Lou and Deb. So a perfect example of director Gary Ross and producer Bullock trying too hard to mirror Ocean's 11 with Clooney and the gang and yet missing the mark and delivering something that recreates the surfaces of that movie but misses an essential ingredient each and every time it tries to does so.
As for the issue of Lou and Deb's relationship... They should have gone to 11 with them being in a romantic relationship and dropped the entire jilted lover revenge angle and Armitage's character all together. Overt flirting between the two rather than their monotone too cool for school chit chat would have added a lot more energy to their scenes, and would have for sure differentiated the male and female versions a lot more. I can't blame Bullock... Well... I can I guess. As stated she's not just a hired gun here. Okay... I can't blame Blanchett too much for her portrayal since they didn't give her or Sandra much to play around with. I would rather they be totally bonkers in love and show that but Cate goes minimalist and instead of being alluring and engaging and mysterious the way Rusty was... She's just dull. In fact that's an issue with writing and performances throughout. No one is out and out bad but compare how every single member of Danny's group just registers with you beyond just their general set up and are all given some moment (a few multiple even) to shine. Someone said earlier in this thread that this film lacked panache, and flare, which on so many levels is what the Clooney movie had in spades. Another way to put it is the Ocean's 11 cast as they were handled? They popped. Everyone popped. Here? We barely get a sizzle. I know some might feel I'm bringing up that movie too much in this review but... C'mon, what do you expect given this film's status as a spin off and one that so blatantly tried to reuse the formula from the initial installment in the franchise?
Continuing with the cast... Why are we still trying to make Rhianna happen onscreen Hollywood? She's just dull. She ain't got "it". Let's put it this way... I am no big fan of Lady Gaga, her public persona, her music or her as a person in general... But in the trailer for her remake of A Star Is Born I saw more on screen talent and charisma than all of what Rhianna gave us in this film. Again... Replace her with Tessa Thompson doing her best to Valkyrie this character up and you could have had this film's Basher.
Mindy Kahling had a nice intro and something that could have been played around with, but it's introduced and then maybe subtly hinted at one more time and after that... Does anyone even remember what she does after she disassembles the necklace in this movie? What she contributes in either the plot or as a comedic presence? No? Neither did I.
Nora Lum aka... NO... You know what I refuse to call her by that ridiculous stage name so let's call her Ms. Lum. Again... She's good at comedy and she could have really shined here. In fact I think they missed the mark to have some memorable interactions between her and Mindy. The film wants to be a funny romp but... It sidelines two bona fide comedians for most of it's run time. I mean these two should have been the Caan and Afflecks of this movie.
Supporting characters acting as a duo that add a flavor all their own to the proceedings.
Carter has glimpses here and there of the strange and manic performer she often and for myself often gratingly is. But she seems to have been given the direction to underplay her strengths for the first time in her career here and I can't for the life of me figure it out. Of all the times you want peak Helana Carter it should be as a down on her luck fashion designer. There's absolutley (and no pun intended) when I want things to go to Eleven.

Maybe they thought her wardrobe would do all the acting but this was one time I wish Carter had brought the weird and loud.
Sarah Paulsen through it all was just... There. Rhianna was at least noticeably dull. Paulsen was just run of the mill dull. What was written for her again, the con woman posing even to her husband as the stable suburban housewife, needed something with some more spice to it. Which is why I think Wiig would have killed it in this part and I don't even think it would have to be over the top.
The Hathaway twist was while not obvious from the start also not enough of a shock to register as a surprise either, if that makes sense? It was only after the twist came that I understood why she didn't just play a funny over the top version of herself. She couldn't play "Anne Hathaway" with the way it turns out I suppose... On the other hand imagine if they had done JUST THAT? Imagine Anne was playing herself and then joins the crew in the heist? Gimmiky? Yeah. But it would have been even more shocking imo. Still I have to disagree with the character's overall motivation. There's some funny dialog there but it's not something the audience should think about for more than three seconds given how she is set up in the first two reels.
James Corden is brought on board and it feels like it really should have been a part written for Martin Freeman with said character being more liberally woven through the narrative rather than what we ended up with which was Corden doing lukewarm schtick for a very short time. I didn't get enough time to gauge anything of the character. Rather than a last moment and sudden obstacle that is overcome way too easily he should have been a presence throughout the film.
Over all it's not like this was an incompetent movie or an offensively bad time in the theater... But it lacks the panache of the franchise in general and it lacks tension and depth which any good heist movie should have in spades at varying times in it's story. Not a bad film but it never ever soars really.