There is too much focus on comet stars after the main game is done, IMO. I'd rather they had bigger galaxies so we could have more unique stars or even more galaxies (Though, I managed to not read ANYTHING about the game, so I'm not sure if the green stars are unique, I hope so).
Some of these purple coins stars are ridiculous (I'm looking at you, Rainbow Road purple coins!) I know they wanted to add more difficulty but this was not a good way to do it, I think.
Anyways I will complete the game because I'm reading that the reward for 242 stars is fuck awesome but I've managed to not read what it is
I just hope the game picks up again with the green stars, I'm at 108 now and I'm having a hard time doing the comet stars I'm missing.