As a note to you guys, I am NOT suggesting moveable solids, I am only asking a question about them. If you think otherwise, just leave, because I won't tolerate trolls and people who complain just because they've read the words they are sick of hearing. (oh god, I just said the words "moveable solids" it's the end of the world! ...no... just no...)

MY QUESTION IS: IF moveable solids were to be added into Powder Toy (not WHEN, I said IF), would there be a separate category for them (i.e. we have solids, and a different category for moveable solids, so that old simulations are not messed up) or would it be a simulation option like ambient heat and Newtonian gravity, so that, once again, simulations aren't messed up.