I like everyone's ideas right now. Especially the zone gameplay that Nowa thought of :)

I'm all for SWB1 & 2 game modes.
Conquest anyone? we build giant effing spaceships and dominate >:).
How about Some Bwii gameplay? So many posibilites.

Single Player Elimination:
It's free for all. Everyone start with a set amount of lives but every time you kill someone, you get 1 extra one. Last man standing wins.
Also a timelimit.

Elimination
Map is 1/3 size, everyone only gets 5 lives.

TDM
First team to 250 kills wins

Zones
Like in battlefront 2, when you control a zone you can spawn from it, every 10 seconds you get a point for every extra zone you have (blue has 5, green has six so every ten seconds green gets 1 point) Plays to 100

Protection
Each team has a VIP, do not let the other team kill him. Semi only has a 1 shot mag to decrease insane sniping, also no zoom. Map is very small.

Free For All
Self-explanatory

Of course, everyone loves different game modes, but I thought of some unique ones tied in with the original ones.

S@D
How this might work you ask? The defenders are given 2 minutes and 30 seconds of time before the blues spawn to build up defenses around the bombs. Once the 2 minutes and 30 seconds have passed, each team is teleported to their spawn to start the game. Once a round is over, the entire battlefield is reset :)
Only 1 life per round! There also is a time limit of 5 minutes. Point system= 1 win=1 point

Elim Pro.
In this game mode, each person has 1 life in a round. Your goal is to just kill everyone on the other time while trying to keep as many on your team alive. How points work in this game is 1 person on your team alive after round is over=1 point.
The time limit on this game mode is also 5 minutes, to prevent exploits.