I think this may depend on your personal interest in how well it looks. My MP sits on the floor, and as long as it works I don't really care how it looks. That said, because I can't see it and it sits out of the way, it's in perfect condition.
But if it's a dented/damaged "foot" I would consider cutting a piece of wood (2x4 in the US) to level it out (HDDs and fan bearings) and raise it off the floor (air flow/dust). Attach with silicon caulk, which works exceptionally well on these materials. Or latex caulk, which would enable you to pry it off at a later date if required.