Re: Kat Dennings as Darcy Lewis
I'd wager (not really) that Darcy's role will be woven further into the Thorverse. We'll have to wait and see obviously, but her having an "expanded" role in T:TDW points that.
Also, I'm absolutely not ready to give up the sole female character who has a relationship with another female character in the MCU. I'm sure the studio's finding ways to integrate Darcy even further in the MCU, as they did with Selvig and Coulson.
"Joss Whedon, Shane Black, Edgar Wright, James Gunn [and Ryan Coogler]… For as much flack as people give Marvel that's a pretty freaking great group of filmmakers. Kind of feel spoiled."