Nope haven't found anything yet, so far the changes don't seem to make any difference.
The biggest change I've stumbled across is that it's easier to combo b321 from a hat call back.
Air hat call back has really strong frame data so I'm gonna mess around with that.
It's easier to land a b321 off an ex air hat call back when you jump away from your opponent on their wake up. This makes you safe and applies pressure.
You can also do cross up jump > ex hat call back > b321.
I still can't find a use for high hat trap but I'll keep digging.