LOL, they say that every time there's a fan request and they simply don't want to do it. For instance, they aren't bringing in Delta Squad because it'll mess with canon. Uh, Delta Squad is the easiest thing to NOT mess up. All they need to do is show them on a separate mission than those in the game Republic Commando and voila it will match with canon. They simply don't want to do it, that's all. They said the same thing for Durge I think, though considering his lack of prescence ruins canon more than the team probably ever could, it's obvious that they just don't want to do him and they're telling us that politely so that they don't lose fans.