The problem with the 3ds version is that it lacks most of the console specific modes, the characters and stages unlock too fast, it has less stages than Brawl, and many of the stages are trash. Therefore, we get bored of the game because we are semi forced to play on Omega versions of stages because many of the stages are moving stages. Here's a little list of the ones I personally dislike. (opinion.)
- Mushroomy Kingdom (one of the worst stages from Brawl. Why the heck did it come back?)
- Paper Mario
- Golden Plains (cool concept, crappy design. 3D land is better for some reason. Maybe it's just because I hated NSMB2.)
- Magicant (AMAZING stage if it wasn't for the flying men.)
- The Pikmin stage from Brawl. I don't like the layout.
- Also, there aren't enough new stages. With too many classic ones, the game kind of has a been-there-done-that sort of feel. (I love Corneria and Jungle Japes though.)
Also, Classic and All-star start to get stale because of their short length, combined with how predictable they are. Maybe the reason some of us don't like it is because we've grown up. It's been almost 7 years since Brawl came out. Since then there have been many other games released with TONS of new experiences and content. Maybe only having classic, allstar, and a short adventure mode that we replay repeatedly isn't enough any more. Heck, I never play the single player modes in melee anymore unless it's the occasional adventure mode playthrough for nostalgia's sake.
That's why it's important for Smash Wii U to have a stable online. Because I'm not a kid anymore, doing the same thing over and over but with a different character gets boring fast.