My main issue with it is it will give an advantage to people who decide to practice it against every prominent move in the game while us, casuals, will suffer for it.
You will only get flawless blocked if you get predictable.
Jin's parry in Tekken works almost the same way and withing 3f window, and he doesn't parries everything he can see, in fact its a character that hardly wins tournaments even though he does has the best move in the game.
Can anyone confirm if the 2 different moves you can peform when amplifying FB are the same animations as each characters wake up? At first I thought they were different but seems to be the same moves which is okay with me.
Block and do U3 and you get the wakeup on U3
Block and do U2 and you get the wakeup on U2 this one being a launcher.
The way i see it
FLB will be extremely usable on situational scenarios.
Getting around zoning, transform safe moves into unsafe moves, maybe transform plus on block moves into unsafe moves, getting around the poking mechanic, such as d1s and such, anti-airing.
Though if this starts to get out of hand, maybe NRS will gonna have to change to an actual parry animation with recovery and an additional command such as F+Block with 3 to 6 frame window to parry and make it unsafe on whiff for a short while.