It is so simple:
-Bring his side heavy attacks to pre ccu update.
-If your issue is the top heavy after parry, then just keep top heavy at 900ms of you want.
-Compensate with better damage output.
Those simple things can make him better, altought he needs a major clean up and overhaul. You guys put in work into creating a hero to later nerf it to the ground making him unviable. Appreciate your own work and un-Nerf him!