I tend to agree with Gabrobot on the issue of player limits.
If Republic Commando ends up playing like Call Of Duty, where you are more successful by crouch-walking around and trying to outwit enemies and ambush them rather than simply running and gunning, then 16 players engaged in that kind of combat sounds plenty to me.
I think it would also be interesting to see some doors that you have to blow open in a CTF map, and introduce some more 'tactics' into the gameplay.
As for Battlefront - the only Jedi in the game will be Luke Skywalker or Darth Vader, and neither are controllable. You simply summon them up to fight at your side in certain situations.