Gameplay: This game should play like the other two games. By that I mean large scale battles on large scale maps. I think the FPS/TPS toggle should stay, so it can fit many peoples playstyle. Also, NO PSP EXCLUSIVE. Instant action must be present, hands down.
Classes: It should stay to the basic classes, definitely with variations from the other two games though.If it goes the way of all other games and has loadouts, i will be extremely mad

Better maps: Both previous games have had maps where you would pick a faction because you absolutely knew you would win. Although I do like the non-symmetrical realistic feel of the maps, balancing needs to be better. Some redone maps from the older games would be cool too. Air and land transition maps have been discussed a lot, and they should definitely be added.
Graphics: the graphics need to be the best they can possibly be. That is all.
Game modes: hero assault for all maps.
hunt: I always thought it was a fun mode.
of course conquest and ctf 1 flag and 2 flag should stay.
a normal deathmatch mode would be good.
free for all mode.
suggestions???
Space combat: it should be more quick, piloting in Battlefront 2 was always too sluggish for me. Frigates should be capturable, but still destructible. It would add more strategy to space battles.
Factions: frankly, I think they should stay the same. No non-canon stuff.
Feel free to share your opinions and ideas.