Found something interesting with Shen's qcf+A and qcf+C. If you want to squeeze more damage off a stray hit on a grounded opponent, you can drive cancel the A punch into EX qcf+K (EX qcb+P > qcf+A in the corner) and the C punch into EX qcb+P > qcf+A for more damage. Also, the EX moves won't come out on block, so they can be buffered during the qcf+P. Seems to work at least on Leona, haven't confirmed on smaller bodies yet. So for instance you can get:
From qcf+A grounded hit:
- [1m Anywhere] qcf+A, EX qcf+K, qcf+D, qcf+D, far D (336)
- [1m Corner] qcf+A, EX qcb+P > qcf+A, qcf+D, qcf+A, cr.C (366)
- [2m Anywhere] qcf+A, EX qcf+K, qcf+D, qcf+D, qcfx2+P (441)
From qcf+C grounded hit (uncharged):
- [1m Anywhere] qcf+C, EX qcb+P > qcf+A, qcf+A (253)
- [1m Corner] qcf+C, EX qcb+P > qcf+A, qcf+D, qcf+A, cr.C (361)
- [2m Anywhere] qcf+C, EX qcb+P > qcf+A, qcf+A, qcfx2+P (429)
- [2m Corner] qcf+C, EX qcb+P > qcf+A, qcf+D, qcfx2+P (433)
I think this has some potential. It's not uncommon for Shen to pressure his opponent and eventually catch them with a qcf+P.