Eh, the second DK stage in Brawl was a stage based on the arcade game. Still DK in name, but I think it was justified more by the novelty of what it represented.
I'm just a little less optimistic about multiple DK stages per version, given the colossal workload all of this stuff is adding up to be. But hopefully they'll go all-out.
75M was in the NES game, too.