Jiang, I can use that risk-reward argument against you.
Previously, there was NO risk in gimping Ness, all you had to do was fall into the PK thunder, and that was it. With this buff, there is now an actual risk in trying to gimp Ness. Instead of hitting the thunder, you have to hit HIM, and risk eating a PKT2, which could kill you. There's now an actual risk involved in trying to egdeguard Ness.
This buff wasn't meant to stop people from eating the PKT1 with fireballs, at least I don't think it was. It was meant to stop stupid **** from happening to it, like a stage randomly eating it, or someone FALLING INTO IT. It's for the latter reason tha Ike's side-b was also buffed, I believed.
As for Ness buffs, if the Up-B buff is to be taken away, I DEMAND that something be done about Ness's on-stage game. The fact that Lucas, a ground-based fighter, has better aerial mobility than Ness, an Aerial based fighter, irks me to no end. And so that I don't sound like I'm talking out of my ***, here are some suggestions.
Faster running speed (facilitates techchasing and helps ground game)
More momentum in jumps (better aerial movement)
Make fair useful, possibly increase damage (improves aerial game, especially with momentum)
lower shorthop to a point where sh dair AC's (improves shff game, preserves techchase game)
Make the bat more useful (improves ground game with DC fsmash)