Firstly, i'm not sure why people bother with the "delete the FB's" posts.... it's not going to happen, no point wasting your time posting that. They want FB's used in the game, which is why it was implemented the way it is.
Pretty sure you could get up to 2 Xrays/match in previous games depending on how you managed your meter. Sure you lose it all, but it's still ~60% damage over three life bars. This time you might get multiple chances to use it, but the max damage you'll get is ~35% raw. The risk comes into play in when you use it, 1st round, or wait till the final, and if you don't then you might not get a chance.
What they need to do is force you to make sure that when you do use it it does hit. Anything that will use up meter is a viable solution. I posted a while ago that you should lose a bar (like last breath) on every failed attempt. So your first go is free, but if you miss you'll have less def/off meter to play with. If you whiff too many times you'll be playing with no meter whatsoever. So you might get the 35% on your 5th go, but you've got no options for amplifies or wake-ups.
Still allows NRS's FB's to be thrown out, but people might think twice before using them if it's going to change their game due to lack of meter.
Option B is meter gets used but still regens, but because of that people will still throw them out if they can turtle long enough without dying.
Option C is that the max damage of the FB lowers on each attempt. 33% > 25 > 15. If you've tried 3 times and all you're going to get is 15% you probably won't bother, so you just go for a BnB.
When 1 guy gets it let then it should open ip for both characters. Can finish him off or he can make a comeback le a st its fair
That's as dumb as saying "they should delete them from the game". So one person is 100% the other is 30%, but the 100% guy gets the option to FB the 30% guy just because he's almost dead? It's a comeback mechanic, the 100% guy doesn't need to comeback.
Tying fatal blows to any other mechanic would be the end of their use competitively.
That's the problem. They aren't going to do anything that might stop them from being used too much.
Realistically the best that might happen is some changes in startup frames/hitboxes. And maybe with a slight chance tying it to meter somehow.