Feeling incredibly samey? Well Im guessing your problem is you completed the entire game in a matter of 2 days..Take your time much?
I wonder if a problem this game is going to present for some, is that if you don't play and keep replaying levels to experiment with optimizing coin runs, it's not going to feel like much.
Yes, even aside from what kind of spotpass competition and whatnot ends up being in the game, the general point of this one is to bank coins. Playing it once and shelving it won't leave much of an impression, I'd guess.
All the playthroughs I've seen so far suggest that the level design is built around complex 'Rube Goldberg' coin farming layouts, apart from just the basic platforming. Dunno how complex it gets later in the game.
Then there's the deal with Coin Rush turning it into 1-life speed runs, which has got to change the meaning of the level design.
Seems like the biggest problem the game really has is the music re-use. That's a rather legit issue, but relatively the most minor point.