Alright, so from what I got...
ATTACKS:
-1-2 Combo. It's really strong for a A combo. It's almost on Snake levels of strong. That part where he almost KO'd Fox at 100% with it.
-Uppercut out of A combo: Again, real strong. I almost mistook it for a Usmash.
-Usmash: Lots of KOs caused by this move. It even reaches the 2 lower platforms on Battlefield!
-Fsmash: Another really strong attack.
SPECIALS:
Neutral B: It's STRONG!
KO B: It's not a guaranteed KO, so there's no reason to ban it.
Tilt B: It's actually a better recovery from what I saw.
Up B: Pitiful recovery unless you're straight below the edge.
Down B: Pretty decent counter. Unlike Marth's, Mac's makes him take one big step forward.
To me, so far the possitives outweight the negatives.
Little Mac is FAST, and he's STRONG. Mac players will have to play the aggressive game and punish hard.
He's got the speed to back it up, and a bad to decent recovery. But his jump height wasn't all that bad, so I figure his tools for recovery are enough. He's a high risk character, and the only way I see him being low tier material is if this game's engine favors the camper.
I think Little Mac is going to be Rank A- material (Bottom of the High tiers) from what I've seen in action so far.