Well, I'm guessing that if it's possible, the devs will make the number of players able to man a vehicle as close to the movies as possible. So we'll likely see two man Y-Wings, snow speeders, 2-3 man AT-STs (I think) and maybe a driver and passenger for the speeder bikes. If droids can't be done right for the X-Wing and Y-Wing, those ships might be upped to 2 and 3 man crafts like they were in...cough...GC.

This is all speculation mind you, I'm sure we'll see multi-passenger vehicles, I'm not 100% sure which ones are going to be that way however. You'll have to wait for a devs response for that. ;-)

It will be just like the movies.  Whatever craft you SAW 2 people in will most likely have 2 , etc.

and FYI BBC, not all Y-Wings are 2 seaters

"Munchkin: One who, on being told that this is a game about politics and intrigue in 17th century Italy, asks to play a ninja."
— Andrew Rilstone

Man, all i want to do is get a good pilot, jump in the Y-Wing, activate ion bombs and fly straight over a turbo laser on an Imperial Star Destroyer.

Dogs look up to us, cats look down on us, pigs treat us at equals.