My opinion about SMO

I completed the main story, i am thinking to get 999 moons. I rate the game 7/10 (for now). I like the mobility and the abilities, just felt that the main story is a bit "boring", the same 4 rabbits almost the whole game, and like, 150 moons on the main story, it could help you, like, 400 moons on the main story, the game would feel more complete. What do you think?