Well, the landing frame thing he’s talking about actually is from S2 - and yeah, it was pretty silly also. He didn’t get crazy juggles off the follow-ups then, but he was pretty free to just kinda DP his way across the screen and make you guess whether he was going to cancel into stomp (which trades with most anti-air’s) or land and do something else.
I think cross-up stomp is pretty bunk, but my biggest issue with it is just the crazy priority in the follow-ups. They made it a special instead of a command normal to keep Spinal from getting dunked for power devouring sammamish, but it’d be really nice if it was a low-priority special like Cinder’s trailblazer. I think that’s a pretty sensible change given that yes, he’s got a fast cross-up that leads into combo, one that he can often situationally make safe with call of sky or instinct.
In all fairness cross-up divekick has always been a thing though, even in S1. The amount of follow-ups Thunder gets from it now though definitely makes it more of a live threat than before, and it can definitely be pretty annoying to deal with.