Simply having more buffs than nerfs or otherwise increasing the mean strength in the game is not automatically powercreep. For it to be creep, it has to
diverge rather than
converge.
Smash patches are rather conservative, and haven't had a single case of buffed characters leapfrogging high-tiers into a new echelon of power.
The worst they did was the half-ham-fisted d-throw combos they gave Bowser/DK/Charizard/Robin in 4; I'm glad they walked these back and are being more measured, this time.
With regard to "who do we expect to get buffed", beyond the obvious (people who got buffed 2-3 patches ago and are ready for round 2) and the Ganon question, I think Falco and DDD are solid possibilities. Both did quite well upon release, but have fallen off hard. DK followed a similar but more rapid trajectory, and was obviously touched up.
Mewtwo is a weird case. On a theory level, and from playing good Mewtwos, the character is obviously not bad. But, where are the results? Where is the usage?
Lifetime VOD win-rate is a pretty terrible statistic to fixate on (on multiple levels), but that he's the lowest by a massive margin is telling of
something.
And yeah, I'd like to see Pit nair fixed. The rest of Pit's hitboxes are honestly fine size-wise. (
Maybe fair is a bit conservative; it could be bigger and no one would complain.) It really is just nair that is incorrect, and should be sized comparably to Simon's.