Some form of kitbashing you could add a in-game store that play to play where you earn in-game currency to buy bits from a shop and not have it be overlay monetized but. It’s a very fun thing to do with typical tabel top games. Or you could add the ability to add custom models that would have to be checked by modes so there is no ∗∗∗∗ but adding custom models that people make would be really cool