Please make Gunbreaker’s normal combo turn into the Gnashing Fang combo

[Nedkel]

Option 1: You have a two-barrel shotgun. You have a button for the left barrel's shot and a button for the right, but you cannot fire the right barrel before first firing the left and it takes the same amount of time to reload shot as two.
Option 2: You have a two-barreled shotgun. You have a fire button. Press to fire first shot. Press again to fire the second shot. Takes the same amount of time to reload one shot as two.

Which would you say is more intuitive design?

At present we have numerous ability pairs or series where the latter literally cannot be used until the prior is already used and the prior cannot be used again during the time the latter is available. So, why use two buttons on what amounts to a single action?

These include Dream Within a Dream + Assassinate, (High) Jump + Mirage Dive, Dreadwyrm Trance + Deathflare, Summon Bahamut/Phoenix + Enkindle Bahamut/Phoenix, Hypercharge + Heat Blast, and then most numerously Continuation, Savage Claw, and Wicked Talon all dependent upon Gnashing Fang.

These aren't a huge deal as of yet, but there's no reason not to trim the slot or two, either. Else, Geirskogul-Nostrond, Fell Cleave-Inner Beast, and Decimate-Steel Cyclone, etc., would never have been tied together in the first place...

Option number 3
You have 4 buttons to press and dont have to watch hotbar all the time in order to see which part of the combo you are in.

I choose option number 3, and its several times better design than just to squish it into 1 or two buttons, more intuitive, gives a space for muscle memory to help you out on rotation and feels just better and more dynamic to double weave in it, and we are already similar with 3 buttons combos and it is what we are used to.
I have already job that i could press one-two buttons for a damage windows, thank you very much i dont need this same pasta anymore, let us tank mains have nice things too.

Gunbreaker is absolutely fine, stop mixing the pot with ready to eat meal.