It would be neat if players could remove paintings by default. Maybe have staff assistance if it is going up in a public area to make it permanent, since that is much less rare than one getting hung in an apartment.
The problem is players historically like to destroy other characters creative content as a way to hurt them, and this would be fine if it didn't destroy someones OOC effort to add content to the game.
So no, right now the policy is to not let players have more opportunities to destroy people's creativity.
