I don't really know if mixin wise this is something that could be done but betterF3 seems to also change some code with the gizmo which causes a crash when both are loaded,
What i would like is that the gizmo can still be toggled and takes precedence over betterF3 gizmo changes/settings
Like i said, i have modified a single mixin once like three months ago, so i don't know how feasable this is

I think it could be done with just changing the mixin priority to be higher for this mod...? But ultimately, I don't know enough about it. I'm looking into trying to create a betterF3 fork which contains this info and hopefully I can merge it in...? But I'm literally brand new to java modding.