Turning storm cell into a braindead unga move isn't the answer to Raiden's problems, especially not in a game with variations. We aren't seeing a lack of Raiden in tournaments because Storm Cell is unsafe. I agree that Raiden needs something, but your suggestions are too overboard and also does not take variations into account.
I've said this before the Raijin buffs, but making SC safe would only result in us being married to Thunder Wave more than we already were since SC was at the time regarded as his best move already.
Refusing to swap to anything that doesn't have teleport is a you problem, even though I agree Raiden isn't himself without it. Having safe unga pressure isn't the only way to become viable either, but rejecting the variation system out of hand despite it having solutions for matchup issues is a choice.
Obviously your suggestions would make TW better, but that's also the problem since it would make TW the only choice ever.
I don't have to provide you video of B2 KB landing against good opponents. I've fought good opponents, I've hit people with the KB and I've even been hit with it myself. Keep in mind that B2 is 19 frames, which is the same speed as the dreaded and unstoppable Sub-Zero f2. Instead, I might suggest making b3 a frame or two faster to bring it more in line with Sub's b3, or give b2 more range as it's a little stubby.
Again I never said useless I said his KB b2 is useless, it's good for mix ups but again in terms of KB it is useless if you're banking on that.
If it's good for mix ups, how is it useless for the KB? Make up your mind dude.
We should be going about these things differently and not just slapping a huge change in like it'll fix everything. A simple improvement to both TW and b2KB would be allowing whiffs and teleports to not break the KB setup; this way we have even more opportunities to mix using b2 and teleport, etc.
I've already said, many times, how to make lightning strike useful again. It does
not need a capture state on it. I don't think you're fully appreciating what you're asking for here.