I'm a bit baffled by the love for the Cara Dune character and Gina Carano, TBH... it's a mildly interesting secondary character, played by a mildly talented person. I mean, if it was somebody really crucial to the story, like Moff Gideon, I'd understand the uproar. Hell, even Carl Weathers' character seems more intrinsically linked to the story than Cara Dune... If Cara Dune never shows up again in the series nothing happens. Or am I missing something here?
Sure, it's a bummer that the character's gone, but it has no real impact on the story, does it?
As for recasting, meh... I probably wouldn't do it, because Gina Carano does have a very specific presence, and since the character doesn't seem essential to the story, why bother?