This mod, formally named Violet Alliance, enhances the original game by unlocking, changing, and adding. Enjoy. :^)
The U-wing will come in two variants. One will act as a transport for some units, the other as a boarding ship for space battles. I am still working out its scaling and ability to fight during space battles, though. Beyond that, I do not know what else to type in the description. But here is a scene from Star Wars that I really like. It involves the main characters sitting a U-wing, ha.