Good point. But its very hard to time on chars like alex and dudley, they get up so fast so you dont have much time to walk back before you pull out the EX. It really has to hit the back of their back foot if you see what i mean. Akuma its easy to do on but theres the obvious teleport. Necro and urien its not difficult on, but i personally choose tengu over yakou against these guys anyway…
But if you can time it well on alex and dudley (maybe after 2 chickens, walk back a bit then cr.fierce?) its very usable.
Edit: OH SHIT, Remember the characters who this works on are obviously the same as those who can be crossed up by 1 hit launch x RH chicken. So if you get the chance go for that i say.
Though having said that, if you do do corner rh chicken crossup into launch xx fierce yakou (taking dudley as example), when you do the break and start with 2 chickens again, you be moving closer to the corner again, but not at the right distance for another rh chicken crossup, so i guess here your next option really is cr.fierce reset xx yakou, if you want to continue the unblockable.
Unless…
After rh chicken crossup in the corner followed by mp xx yakou, could you possibly do (for the break) jump x double jump -> rh break -> cl.mk x uppercut xx fierce yakou…
Sure the yakou wont hit, so they can tech roll, but against guys like alex and dudley, does this even matter cos theyre so fat? Baring in mind theyre gonna be so close to the corner.
I dno i havnt tested it, just a thought…