New weapon class: staff/ranged mage

Would it be a lot of effort to add a new type of weapon class?

Left-click for all mage related weapons results in a feeble poke with a staff that does next to no damage. The idea is to add a new weapon class which basically acts similar to a bow for warriors, but instead of arrows it could initiate some magic effect (cast a spell, trigger a script). So you wouldn't use a staff for physical combat in any way anymore, it would act as a ranged weapon for magic. The attack rating for the weapon would control how fast the magic effect can be triggered.

Could make things like staff of flames pretty useful by letting it trigger a bunch of fireballs on left click. Maybe have crystal dagger fire a bunch of lightning at a target etc.

This would add a new dimension to mages, and create a start for making them more useful.