Some Bard Thoughts
I think the changes on the PBE are a good direction. Higher range on AA and base damage on AA/Q.
But his Q still feels off as he really doesn't build AP. Other than collecting Chimes he doesn't gain much damage in the game.
Lower his Q's base damage, and give it %max hp damage. Increasing per rank(no AP scaling). And gaining +1% every 25 Chimes. I don't know the speed of his Q. But it feels very slow. For the requirements for it to take full effect, I feel like anything outside of AA range will easily dodge it.
Also make it so that when an enemy steps on your W, it gives you a Meep. If you're not already at your current cap. This would make some quick casting of W's on enemies for that slow for some interesting plays.