I play Endor mostly, but But Mosespa is great the way it is except let me inside that ship. I think a large scale tank and walker battle would be fun. I just got a joystick so need more practice there. I like the attack ship in 2142 with a mouse and keys but FS needs a Joystick. First impresstion was I can't turn tight enough so I got a joystick now and it seems to Me like the turning radius is too tight. Its probably fine.
As far as lore accurate It does not have to be as long as it is not something that would be considered impossible in the Star Wars universe.
In ship maps sounds good someone has mentioned before. A conquest type map to capture and defend each level with ramps, elevators and duct work to access each level. With the final control point being a bridge or reactor. Spawn points only on the boarding ships. The traps are a hoot on Endor. For a ship map maybe a garbage chute for the unsuspecting. Maybe an animation of being burned up by an engine once out in space or being blown to bits by a nearby cannon or splattered by a passing fighter. If a boarding ship could be destroyed by the defenders maybe have the door open and shut fast to suck You and or Your whole squad out into space(better remember which ones were destroyed logically it would destroy the dock also).
A mountain/Island or Islands map for some long range sniping and downhill speeder racing to the control points, could have a lake if speeders don't sink, floating mines could be fun, might throw in a tunnel for a choke point.This could be done on an Endor type map or an asteroid with caves, centrifical force could provide gravity in a cave on an asteroid, flashlight only (probably can't be done but cool never the less) around a position until the power is up and lights are on. A star could light the rest. Or some colored reflections from shiny minerals/rocks of some sort in parts. Maybe two openings with generators at each end to protect. Might have a time limit to get one running or You will freeze to death. Snipers freeze first.
Fighters inside a comet or asteroid would be fun. Land the fighter to capture a control point or just battle or use the same map for two modes. Being able to get out and man a turret would be fun. There is a scene in the old movie The Last Starfighter, chasing a fighter and destroying it inside an asteroid that might provide some good ideas for an asteroid map. Mentioned before but fighting on some weird creature sounds fun. Traps with a creature that gets you when too close. Maybe sneak or crawl past like the mines in BF2142.
Fighter map in an asteroid field and/or space mine field. Maybe some things here the Team can use or spark an idea.