I don't think Uhura could fit that prominent role. I've been stating this a lot before, but they should put another female character/crewmember on the Enterprise.
Sorry - they've got Zoe Saldana
, and they're going to move her to one side for someone like Torv?
Saldana right now is a bigger star and ascending more quickly than anyone else in the movie. She's hot in every way that she can be, and if Uhura is a major character in the next movie it'll be because Saldana is Uhura.