2 simple changes to fix Bard
Add range to his Q. Single damage spells (kit wise) generally have 1000-1200 range, and lack the prerequisites to be effective. The exception is Blitz, same range, but a lot more potent. And I believe faster. (Also, possibly make it so that if the skill goes through a wall and hits a unit that it stuns then.)
Add some base value to his W at later levels. I get wanting to keep it down a tad early to mitigate his impact on the jungle, but theres no reason is shouldn't scale well since it has to charge, and therefore requires planning. Taric heals for a mere 10 less without requiring a charge, and heals HIMSELF as well.