Well I mean in FFTA Archers/Snipers had a lot of enfeebling shots (blind, pacification, bind, etc...). They could certainly go that route again.

Another option would be something like how Guild Wars preparations work. You hit the skill and, for example, your arrows now inflict poison for the next 30 seconds. They also had burn dmg arrows, interrupt arrows, explosive arrows and the like which were all done through applying a preparation.