Think the biggest problem is they never want to leave that one game.
From what I understand the pros don't like the new version.
I think they are slowly converting to Project M.
well its tough, Nintendo made brawl specifically without any of the awesome stuff that made melee so competitive and great kinda think SC compared to Sc2, they are slowly converting to project M only as melee dies though because this is their life.
and even then that Mod is made specifically after melee, adding in all the physics and tech that made melee so popular among the competitive scene, pros are hesitant to switch because theres a shitload of new characters and matchups to learn.
now you got Nintendo fully backing smash 4, and still they didn't deliver no wave dashing, no dash dancing barely, no DI (shitty vectoring aka HOLD DOWN) no L cancelling etc, so I don't see this game taking off either I think its gonna have the same fate as brawl and die off due to the boring nature when watching it, then they will just MOD smash 4 to be like project M again.
Its hard to understand how they have something so perfect, but wont just fall back on it, melee is still a great party game you can casually play with friends, while on the flip side has some hidden tech that can take the game from casual to competitive, I don't see how dumbing it down and taking out stuff that made the game so unique is working in their favor, I mean if project M isn't enough of a smack in nintendos face for not doing shit right I don't know what is and would make them wake up, brawl has all but shriveled up and died.
idk maybe im just a melee elitist, but brawl was dumb and was shitty to watch even when the pros tried to make it work, even now theres something about project M that just dosent feel melee, they had to down the stocks from 4 to 3 to speed up the process, people feel like they live way to long.
in the end It is about money, and I think some douche showed me that brawl was the most succesfull in terms of $$$$