while I can see the auto-combo system being added at some point for PvE (probably after a few more expansions) I can only see the physical Melee class types having a use for it (MNK/PLD/WAR/DRK/DRG/SAM/NIN) & only for their "Single-target" combos. While I'd be okay with it added I would be alright if it was added as an optional feature too, as I would just adapt if it just became norm.