How about Individual Chains based on consecutive, successful Spells that Mobs are weak to but broken when a Spell is resisted.

and

Individual Chains based on consecutive, successful Weapon Skills through The Art of Incapacitation
 and Damage to Body Parts but broken when a WS misses or is evaded.

Speed is not as important as accuracy, timing and knowledge of enemy weaknesses. Basically just add SP/EXP Bonuses to an existing system which some may be unaware of. It's actually pretty cool. I have fun with it on my Archer, anyway.

Check it out in the Battle Regime section on Loadstone here: http://lodestone.finalfantasyxiv.com.../battle02.html
and Bonuses for successful, consecutive Battle Regimes would probably be cool too, although I have never done one...

...if fact I have never even PT'd outside of Behest. (You really need to force people like me to Party).