Increase the blockstun of pokes by three times what they are now, just like they did with Erron's 21 string but by a massive amount so every time you hit or block a poke you have this gigantic hit stop to hit confirm it in a high without getting mashed on or destroy the average Jacqui player for not carrying about frame data and going into F3 without hit confirming.
No need to mess with frame data, just make it actually humanly possible to see that you blocked or hit a poke and act accordingly before the maniac on the other side gets his chance to mash again.
