It's a complicated subject. There's a lot to touch on, and while I disagree with Omni, he makes some points, as do some of the other commenters.
We have a problem with a lack of veteran presence in the Smash 4 community. So many of the major figures have decided to stick with what they know rather than take a chance on something new, and many of those who have crossed over are...polarizing. We have no stability, no voice of reason at the top, and it shows with all the knee-jerk reactions and conclusions jumped to. It's really frustrating, feeling like the powers that be aren't even bothering to give your community a chance.
Worse yet, it gives newcomers no voice to rely on...and it leads to too many of them listening to whoever happens to be the loudest. They end up echoing the vocal minority: "Defense is inherently bad!" "Where are the true combos?" "Smash 4 needs more ATs or it isn't legitimate!" "No stage hazards whatsoever! No exceptions!" "Melee is what Smash games are supposed to be like!"
Our lack of leadership and lack of prominent and informed discussion has some of the lifeblood of our community parroting its most vitriolic members.
More importantly, though, there's something bigger going on here. The reason we've been getting tripped up on these things so often in the last few months is because despite our differences, despite how wildly our opinions might vary, I think we all have one thing in common.
We're afraid.
So much of what's happened since October--or even before that--has been driven by fear. The Melee community is afraid of being left behind, of the game they've put so much blood and sweat into being cast aside. The Smash 4 community is afraid that Melee's most zealous fans will snuff out their community before it can ever truly come into its own. Supporters of custom moves are afraid they'll never be given a fair chance, that the metagame might stagnate from the loss of variety, while their opponents are afraid of a metagame ruled by gimmicks and dominated by moves that force the meta to revolve around them and countering them. Proponents of smaller stage lists are afraid the more dynamic stages would be more of a factor to who wins a match than the players themselves, while the "stage liberals" are afraid that too small a stage list would skew the metagame too far toward the characters who excel on those stages. Even the 2-versus-3-stock debate could be boiled down to everyone being afraid that the other option would have dire consequences.
Omni's afraid, too.
Hell, I'm afraid of some of this stuff. Anyone who's known me around here long enough could tell you that.
It isn't an easy thing to overcome. I should know. I don't have all the answers, and I'm not arrogant enough to ever claim to.
But as for what I think--hope--our best plan is? Gather as much information as we can, and get it out there. Smash 4's metagame is still young, and the more people are informed, the more capable we'll be of making the decisions that shape it. The more easily newcomers are able to learn, the more easily they'll become informed as well...and the less likely they'll naively repeat what the vocal minorities are saying.
I don't know about everyone here...but the better I understand something, the less afraid I become.