Where did you get that the Knee Smash F-air has a 30 frame landing lag window in Sm4sh?
All of your questions are questions no one but Sakurai can answer or until the game is released & people are playing it to tell you. To answer them hypothetically, I'd say:
- Hopefully, but in the picture above it doesn't necessarily show it has been buffed.
- Assuming it returns, then yes if we buffer the ShortHop F-air input quick enough.
My thoughts: I'd like his Knee of Justicecream to be almost as cheesy as it was in Melee, yet with that kind of movement & mobility reduced to Brawl speed & now a mix of in-between Melee & Brawl, the fear factor of the Knee's presence won't be the same, though may be compensated with more launch power than Brawl's.