Warboy, i know you like a challenge , i have a new MOD idea that i am sure will cause you several problems - I wish to turn those unused UFO designs into Alien MEGA-CITIES, each UFO would be a different building "Type" that can be landed anywhere on earth , to form a "Stronghold" on earth to Clone more Aliens , Build new unit , defend critical areas ( above traditional underground base). Each additional Modules( UFO) will fly in and Land to add more to the Alien stronghold and start the next phase of there conquest.
I also need a new Alien Fighters craft , not sure what this will look like yet, it needs to be small, only 2 crew , strong and fast.