Bard. I agree with wanderers minuet. Hate the bow mage feel which is why I do play it anymore.

Ninja. Nothing terribly huge here all I'd do is make shukuchi a teleport style move kinda like aethereal manipulation would then avoid dots when you move through them like blm does.

Paladin. Simply make mitigation more important and impactfull on fights. But that's more of a content change than a class change. Content needs to move away from dps checks and more towards mitigation / healer checks.