I need a break from platformers after trying the Expert 100 Mario Challenge.
Easy/Normal tends to suffer from short levels, but Expert suffers from dickish level design. So many mazes, door mazes, rooms that lead to nowhere or trap you, trampoline based, single blocks, frame jumps, etc.
Too big IMO. Like the games themselves, I wouldn't be surprised if Sakurai is treating paid DLC like characters.
To be honest, I also get the feeling that if the music from a past stage is being used on an already avaliable stage, then that stage is not likely to return. More dumb gut feeling stuff/Big Battlefield but whatever, just give me something that isn't Mario or Zelda related.
Planet Zebes, Saffron City, Fourside, and Hanenbow I feel have the best shot at returning; and Shadow Moses Island if Snake returns.
Also I don't know what the bias is towards it, but I don't think Pirate Ship is returning, nor do I want it to.