Really enjoyed this episode. Changing focus while still getting good character development was cool and I really liked the introduction of the Squad and showing Waller's shady morals (though I too think that the actress could do better, still not a bad performance though).
The scene between Dig and Felicity was fantastic, it had a real "real"-feeling to it (haha).
I didn't care for Shrapnel's demise and do not think they should bring him back. Especially not in the very over the top meta version. I didn't hate him as a character but thought that he was a bit too exagerated and comical ( as someone who partly shares what were portrayed as his believes I thought it was a little bit ridiculizing...I'd prefer they let Anarky appear in a serious manner once they've eventually made Ollie into a liberal (which the producers hinted they will do)).
In the next appearance of the Squad (yes I want one) they should focus on their group dynamic (because let's be honest, this time it was all about Deadshot, which was fine as I think the episode was made to present the concept of the Squad to the audience rather than developping it).
For the roster I'd love to see Harley later on (I think as some others said here....it would be very easy to be extremely vague about her past, just hinting at a psycho ex-BF) because I think she's awesome and it would mean the bat-universe exists (you can be very very vague about that too, just hinting at her living in Gotham and having had problems with local crime-fighters...it would be the perfect way to hint at a mostly-complete DC universe without overshadowing Ollie (which by the way I think is not such a problem, as Ollie has many feats which make him awesome on his own even if compared with Bats) and without having to wait for the DC execs to decide on lifting their stupid embargos).
The member whom I'd really like to see next though is Knepper's Clock King. Getting him into the Squad would be so easy. Just say that ARGUS pays for his sister's and his own treatment.