I’ve started trying that 9P combo in matches (9P,P,3P,[214PPP or 214PP,214K+G]), it’s much better than my go-to 9P,6P+K,PP.
From your frame list I was surprised that 3PP on block is actually jab punishable (-13); I never actually checked it.
Also, our 2 moves that give advantage on block are:
- 236P (+3). Cancelling a string into it is the same frames on block.
- 236P+K~K (+1) Same frames if you cancel into it.
If you cancel them though, there’s a gap, so it’s probably better to cancel into them on hit.