I've always been for this as a controller player

on a controller setup real estate is even more prime since face buttons (circle square triangle x) and directional buttons have to be considered differently
face buttons are easier to press through movement mechanics so they are the most prime real estate on hotbars and since the 123 combos often need to be maintained through movement that means they pretty much have to live there

having the option to condense the 123 into a combo would allow me to free up at least two buttons on the face buttons for most jobs which would then allow me to put the most often pressed weaves on to face buttons in the same section so it would be easier to press weaves through movement