In some ways, actually better than standard hotbuttons.
Standard hotbuttons need to finish action before going on to the next, not these - more concurrency means i can have alts do their work faster.
Unlike standard hotbuttons, we can copy/paste from/to these. Easy to port this to other machines as well.
couple of existing bugs - colors are not sticky, have to reset color and redo color on new buttons. The button has click-thru issues sometimes, and will target something thru window (changing target) before firing button click event.
But overall, really nice. I used to have 11 hotbutton bars, i am down to 2, plus the button master ui.