Sunsinger: Remove Viking Funeral and add something like: Song of Flame also grants a damage boost for you and your teammates. Voidwalker: Mega PvE damage buff, it's fine in PvP Bladedancer: Hit Detection, Hit Detection, and Hit Detection. Prevent frontstab Melee kills, and buff arcbolts to 100-110 damage (was 122, nerfed to 90). Fix the super by adding further lunge distance (no more shortstops) and improving hit detection. Gunslinger: Using Deadeye now grants the ability for GG to crit. Remove Circle of Life and add something useful. 2x damage buff in PvE Defender: Not much you can do to this class. Best class for PvE, low tier for PvP. Any PvP buffs would make them too strong. Striker: Replace Catapult entirely. If you're not using Increased Control, you're doing it wrong (goes for defender also) give strikers something worthwhile.
Might as well make this a post.