Since myself is a Bard main, and have played Ranger to lvl 99 in FFXI i feel really if they want to nerf bards damage they could just put in the same thing ranger had in FFXI.

This was you do less damge depending on how far away you were to the target and you had to find the "Sweet Spot" as they used to call it to gain max damage output.

I feel that this is all they would have to do, as staying in the "Sweet Spot" would be hard for bards especially in Titan where you are constantly moving and dodging.