Thanks so much! I saw the SPS go through and have been waiting for your post.
For this one I think I'd like to see an offensive buff ability. This is in the same realm as my madhatter card idea. When the monster successfully lands an attack, backline card gets +1 melee attack. This would be restricted to 5+ mana cards however as this buff could potentially give an attack to a card that wouldnt otherwise have one. It could potentially see an interesting meta develop with creating a superpowered backline tank.