Originally Posted by SuperFerret
Adding Kara would distract from the focus on this Superman's character development, especially in regards to him now being the true last of his kind and how the encounter with Zod ended. Nevermind that adding Kara would do NOTHING for a Justice League movie for many reasons, particularly the fact that Kara's never been one of the iconic League members and that with Superman, Wonder Woman and (hopefully) the Martian Manhunter being part of the JLA's Big Seven, Supergirl adds nothing in terms of uniqueness. We didn't see War Machine in the Avengers, so I doubt we'd see her in whatever Justice League movie gets thrown together.
I'm not opposed to seeing Supergirl in the movies eventually, but given that MoS is essentially a prologue to Superman's story (and a fairly fast moving one at that), the sequel will be far too soon to include her.
Finally, as with most fan casting threads, you're all wrong. The studios will likely choose someone none of you have thought of.
I disagree here. Supergirl could be an excellent addition, but it depends on what point in MoS2 she's introduced. Give Superman half the film to feel alone in the world, THEN introduce hints of Supergirl before we meet her properly. That way, we feel the contrast Superman feels. First, he's alone, but then he finds hope that there might be someone out there he can connect to. Make him question whether or not she's a threat like Zod or Faora, then trust forms. That could be an excellent arc, even in one movie.
Yes, Supergirl probably won't be a League member. However, that doesn't mean she can't be in a JLA film or play some part to some capacity. And, even then, it doesn't matter if Supergirl is in JLA. What matters is what role she plays in Superman's story.
Plus, we need more kick-ass ladies. That is simply a must. Without Faora, we'll have a real deficit of awesome Kryptonian women. >_<