Any change to implement an option to disable blizzard button glow on the auction bars ? (for like when a spell procs something and flashes the border of the icon on the auction bars - I want to disabled that!).

I don't think there's a cvar for that. This quick and dirty snippet seems to remove it though, you can turn it into an addon with https://addon.bool.no/

ActionButton_ShowOverlayGlow = function() end