Eh, its hard to characterize it as specifically a comeback mechanic or lead holder thingy yet. But at best the mechanic makes the game needlessly complex. Seems the smash series cant escape having one overtly pointless mechanic (64 & melee with l-cancelling and brawl with tripping).
Also @
~ Gheb ~
the olimar named shane almost beat m2k game 3 in a tournament here in socal.
Now for this guy:
Im happy if pika goes under the radar atm. I think to an extent he suffers more than other characters on the 3ds. Pika seems like a fair character and very well rounded character. The verdict is still out but so far he seems capable of handling most MUs while also being able to be outplayed regardless of where he ends up on a tier list. He doesnt have any particularly "outstanding" attribute, the closest thing I can think of that has the potential for this are his bair/fair edgeguards (with interrupted multihits causing a spike affect, pika can use their good hitboxes to essentialy kamikaze dive into a recovering opponent with a hitbox and spike them, or interrupt it with the stage. Unless the recovery is very linear it should still require reads or particular set ups). His ability to avoid traps is better than other characters, but it was like that in Brawl too. I think his weaknesses and nerfs at least make up for this, which Ill get into next.
Pikachus overall damage output is lowered, with his hits typically doing less than before (worse than brawl better than melee). This is also coupled with the fact that his attacks kill later (not to be confused with ability to land kill moves). Additionaly, he also dies a lot earlier than he used to. This can lead to characters with strong single hit kill potential to take advantage off a good read (i.e. zeldas up-b can push pika into the air with its first hit then kill him around 50% with the second hit), especially if theyre fairly heavy themselves. [I feel this balances his ability to avoid traps and getting hit in general]
All of pikachus buffs are extremely subtle in their implementation but tend to have noteworthy effects. The most important buff came from the universal improvement on hitstun. In melee pikachu's attacks linked poorly, in Brawl they linked well but hitstun was
barely too low on many follow ups. Now his attacks link well and hitstun traversed into the threshold that makes pikachu a combo monster.
The second most important buff is his speed improvement. Again while very minor, in Brawl there were many options unavailable due to falling
barely short in his dash speed (its crazy how often dash upsmash hit powershields both for myself and in watching other pikas, and dash grabs just barely wiffed). His speed allows him to land those hits you felt you shouldve but just barely couldnt in Brawl.
Finally his third most important buff is his new dash attack. This might seem odd but its fairly significant, pikachus dash speed in brawl (whos improvement in smash 4 is also relevant here) gave him good approaches with shield, spot dodge, and grab. However he lacked a truly threatening attack option. No longer. In 64, melee, and Brawl dash attack was one of the easiest moves to land but commonly considered his worst move for various other reasons. Now with increased damage (one of the few moves damage output improved), a handy knockback angle, and kill potential; dash attack turns into a very viable option from dash. Coupled with his fast ground speed, dash grab, shielding, plus other options (spot dodge, SH dair, fair, uair, etc.) pikachu is allowed to play an extremely dangerous game of RPS out of dash.
Related to these three points, in general pikas ability to land kill hits is notably better even if his kill moves kill later, I feel if both characters are at kill percent pikachu should have a pretty decent advantage against most the cast particularly if dash attack is an option.
Few other buffs and nerfs here and there. I feel some of his hitboxes improved very slightly like nair and dair, though fair lost the hit on the tail but seems bigger at the head. QA stuff. Fsmash having good knockback at a distance is nice. Also I thought thunder was nerfed, but changed my mind after watching ESAMs outstanding use of it.
In regards to MUs, pika was extremely fortunate in that certain aspects from characters providing him his hardest MUs in brawl were nerfed, or the character was entirely removed. The latter being the case with ICs and former with diddy and olimar. While I cant say what the diddy MU will be like yet, what made him so difficult in brawl was pikachus very poor item play coupled with his bananas. Agree with shaya on ness and lucario in particular, I imagine like Brawl these MUs will be hard but not unmanagable (dont know enought about yoshi). Villager could also be tough. And I can confirm Rosalina has a hard time hitting pikachu.