Warning: I suck.
Damn, that's some nice cass work there. I'll just give you some of the stuff I use that I didn't see you (ab)use as much as I would have.
My cass is VERY heavy on the frame tech, much more so than yours. I dunno if that's better or worse, for sure your cass would probably hand mine her ass in terms of movement and spacing. BK (blocked) into 2B+K CH into low grab, not the fastest thing to use after BK, but still, I abuse the hell outta that until they wise up and start breaking, ONLY then, mix up the low grab with other stuff, possibly faster stuff, or none at all if they expect it and turtle up, then just grab or something. I saw you do maybe one of those in the vids (BK, 2B+K, low grab), indeed, you tend to use safer options after the BK than I do.
WS K too, mix that shit in whenever you can and then follow it up also, I'm sure you know it's the same idea as BK, but leaves them crouching on block = many options from here. I did see you do it some, but I think you can still stand to set it up for more shenanigans. One spicy option is to try WS K (blocked) into 66K, seriously, since they're forced to crouch from the WS K, the 66K ass usually beats out most things they will likely mash to retaliate, then you get a nice CH stun to play with. Also, should try to setup to get them to block more charged stuff, possibly on wakeup, 88_99 or B+K seem to work best, then follow it up for more frame advantage mixups.
A good string I use that I didn't see you use is the 1B into FC followups: FC 2A for interrupt, FC 1B if they freeze, FC 3B if they try to BB you, FC 236 blah blah for random shit. Throw it in once or twice a match for some fun guessing games. 1B itself is more useful than it looks.
Also, like someone else said before - 33K, A+K (blocked) into fun follow ups. Nothing guaranteed, but even if you trade blows, Cass usually has advantage cuz most of her normal hits land hard.
Your 1K into 9B spam is awesome lol.
Edit: forgot to add, BB or AA from tip distance (blocked or hit) into 214 shenanigans would add some spice to your game too.