Cross / Hotbar idea: setting combos to one button to save space

[RaphaelDDL]

EDIT: I should make it clear that what I'm suggesting is not for simple macros that change the icon as it goes-- you would still have to hit the button again for the next hit in the combo

The idea is nice. I use macro for that but the whole problem of macros is when a skill of the middle of the combo misses (therefore not triggering the plus for the combo) and then gotta start the macro all over because the next skill which needed the combo would not work (in MNK case, for example which need forms)