The Famine nerf seems excessive. Maybe just make it so Jinx didn't stack? Much simpler solution than giving him a subpar trait. (Cursed sucks. No two ways about it.) He's a freaking Mythic.
The problem people had with Kerby wasn't his summon. If it had just been the devour reduction, that's fine. Thanks for making Guild Wars more stressful than they already are now that we need more reliable summoners.
(Note, I'm not rage-quitting using either troop - I just think the nerfs are poorly thought out.)