Figured i’d start a thread to gather obscure knowledge. Since this is just for fun, there probably won’t be much in terms of frame data or engine analysis. This is more about random things that you notice while playing.
I’ll start with something i’ve been noticing lately. Everyone knows that if you’re crouching and you get hit by a special move, it forces you into standing hit stun. The minor exceptions are the non-knockdown flame projectiles - Ryu’s red FB and Dhalsim’s LP FB. I think there’s only one attack in the game that can force a standing opponent into crouching hitstun and that’s the first hit of Ken’s fierce DP. You can try it out against one of Dhalsim’s limbs if you want.
However, the weirdest thing is that hitting Honda or Blanka twice in a row while they are crouching forces them into standing hitstun. Anytime you do a combo against them, the first hit puts them into crouching hitstun and the second hit takes them into standing hitstun. In fact it doesn’t even have to be a combo. As long as you do two hits in quick succession, the second hit will make them stand up even if it doesn’t combo. I tested out all the characters and this only seems to apply to Honda and Blanka. I’m pretty sure this goes all the way back to the CPS1 games.