...and now for something completely different.
original rough-draft
S Tier
Lucas
Wario
Wolf
Metaknight
A Tier (more polarizing and/or gimmick) < thing that trumps them from S Tier
Mario < staying where he's trying to lock you out of to make him commit
Fox < taking risks for small rewards to start a stock elimination process
Zero Suit Samus < never committing to maintain control from positioning
Luigi < gaining small rewards for control while avoiding possible risks
Peach < out-mobilizing and avoiding possible risks to make her commit
B+ Tier
Snake < (mini-Peach with less diversity but more ToD's and polarity both ways)
Pit < (mini-Mario with more stale-mate/lock-down flexibility, but less good polarity)
Falco < (mini-Lucas with more polarity both ways, but less flexibility in lock-down/process)
Captain Falcon < (mini-Metaknight with less lock-down, but more polarity both ways)
Charizard < (mini-Zero Suit Samus with less diversity and more polarity both ways)
Donkey Kong < (mini-Metaknight with less lock-down/stale-mate, but polarity both ways)
B Tier
Pikachu
Toon Link
Sheik
Ivysaur
Link
Bowser
Marth
B- Tier
Ike
Zelda
Mr. Game & Watch
Ness
C Tier (stuff)
Jigglypuff
Diddy Kong
Sonic
Lucario
ROB
D Tier
King Dedede
Ganondorf
Squirtle
I'll probably update this once before 3.0, but this is a thrown together rough-draft of what I think the Tiers look like.
C Tier are the only characters that I consider complete, but are notably not-as-good as the rest. They're basically good enough, just a tweak or two and it's all good.
D Tier are the only characters that I don't think can compete, they're so close, and great in niche ways, but there's just a touch missing that holds them back there.
Edit: Updating it periodically...