omg...foxy I love you. you always beat me whenever we played and I would get super salty in MK9 (it was only the lag
). But seriously, you realize that you just described Dualist but worse right?
Dualist f213 cs is +6 and he is garbage. The execution alone makes it not worth it because if I'm a frame or 2 too slow my +4 is now +2 and with kangs normals he might as well be negative.
Dualist sucks because...well he's just a poor man's version of Dragon's Fire in every way. Worse pressure, worse zoning, worse flying kick(as well as no MB), and most importantly no bicycle kick MB so he can't convert his stuff.
Foxy is right saying that if the the cancels were not as + then you'd be able to open people up more easily (I dunno about +4 though...), but then again F213 FBRC is not your only option and you should be mixing it up with less + on block RCs to confuse your opponent.
I think the FBRCs run cancels in their current state are fine as is when you compare them to the rest of the popular RC characters.
Liu Kang: Pure chip and ability to easily jail.
Johnny Cage: Enhances footsies, allows you to open people up, some jailing as well.
D'Vorah: Enhances footsies, allows for 50/50 game, some jailing as well.
Erron Black: Mindgames and makes your absurd mixup game safer and better.
Scorpion: Some plus frames, was nerfed but kinda makes sense since he has strong mobility and air control.
Jax: Combo extender and mindgames. He's already strong so he doesn't need plus frames.
Raiden: Combo extender and mindgames. Fix hitboxes pls.
Predator: Lmao
That being said, I still think he's a top 5 and possibly top 3 character in his current state.