While I'd love to see any and all GCD skills have some reason for use in every given GCD, which would require the removal of combos as they currently stand... I don't want to see anything like the PvP combo buttons, which waste animation potential over their given keys (Kasha Combo, Gekko Combo, and Yukikaze combo each having an animation in common, for instance).

I'd much prefer, well, actual combos -- varied intelligent ways to deploy together skills which already individually have useful functions in any given GCD based on one's circumstance and intent. That'd be nothing like the bloat-driven design we have now, though, and would likely be too much table-flipping for 99% of players.