I smell potential for a great spinoff series! Cranky and Luigi, both neglected, but striking back at the world, one insult at a time. Cranky does the insults, and Luigi usually gets insulted, so this could work.
King Boo would have to be there for Luigi, plus he is neglected too in favor of Bowser. Dark Moon was really the only game to give him a huge focus.
Oh, and I checked the sales of 3DS games yesterday and Dark Moon is in the top 10. King Boo getting some love!
Monster Hunter 4 was also in the top ten, ahead of Dark Moon, and it has only been released it Japan and Korea! 4 million copies sold just in those areas. I had no idea it was so popular.