I think that assassins need to have more revenge per block.
As now, 2 heavys in a gank and you are dead, so you never get revenge. Other characters with a lot of HP, can handle the damage and manage to get revenge quite Easily.
Maybe if you let assassin a little push in that regard they could survive more.
What do you think? Or it would be op? (I personally don’t think so, as you never get revenge but other crazy characters yes)