There’s a huge aviation community on ROBLOX, and a nearly as large sample set of games that would benefit from this new category.
I don’t know, to me its a no brainer, i see the games and communities all the time, and I could easily see the category filling up with games.
I like “Vehicles” better, but personally I would think those kind of games fall under a category already made nonetheless. Aviation simulators could fall under RPG or Town/City in some cases. Train simulators could definitely be in Town/City. Car driving can fall under Town/City (unless it’s racing, then it could fall under sport).