I know this ia full conversion mod BUT honestly 98% of the statics and buildings already exist in 2142. How many 2142 maps have the fuel silos with catwalks, enclosed trench lines, module style facilities, and reactor or power facilities? They're there already. Take the barracade walls from Camp Gibralter, fuel silos and enclosed trenches from Suez, the power plant from Sidi Power plant, and that Big Mushroom structure from Shubia. Retexture parts of the larger objects.
Then add the signature FS statics; crates, barracades, defensive positions, and debris.
Of course the all the fun vehicles from FS.
Build your terrain with the majority of the playing field being in a massive crater but some sections of the complex being on the rim or outside the crater.
Texture the terrain as a lifeless void.
Have the attackers spawn from a capitol ship with shuttles and fighters as escort.
Have the defenders have an array of ground vehicles, anti-air and a few fighters.
As the attackers gain ground they get ground vehicles to spawn that their newly captured positions.
The whole facility is within an atmospheric shield bubble that's why aerial bombardment is useless AND why soldiers don't need pressure suits.