Okay, I played a few rounds with a few players on the Tantive IV earlier. I wanted to get into the bigger rooms, but I could never connect.
Levels are HUGE! You can go anywhere in the Tantive. I haven't played the other Beta level yet, Utapau, so we'll see how big that is.
Troops and controls are pretty much the same as BFI. In the Tantive level, you have five troops to choose from. Regular troopers (Stormies and Fleet Troopers), Heavy Artillery troops (RFTs and Stormies with rocket launchers), sharpshooters (Scout Trooper and I believe an Endor troop), and specialty troops (Wookiee Smuggler and Darktrooper). Pilots were replaced with a Bothan Spy and Death Star Trooper, and you can also play as an Imperial Officer. I may be missing a rebel soldier, though, as I'm freaking tired right now.
I'll post more later. Pretty fun, just like the first one.