The window for defending a Guard Break (with a Guard Break) feels unfair.
If I press the Guard Break button too soon, I will not break the opponent's guard break. I have to wait for their Guard Break to come in to contact with me first, and then immediately press Guard Break to defend it, and even then it sometimes doesn't seem to work.
I feel that this is unfair and I'm being punished for reacting too soon.
I understand what you mean, and the gb icon kind of baits you into thinking you have to counter it when you see the icon even though it's too early, but once you really get the timing down, you rarely get gb'd and I personally feed it's fine as is, with more time people will get used to it more imo and it will balance itself out. Right now a lot of people rely on it to deal their damage but it's not always going to work.