Ok, we know kingsisle has been fighting with perfecting the stunning system for awhile. I think I had come up with an Idea to fix chain stunning without all the shields. With the shields (Especially in 4v4) this makes it kinda pointless to use more then one stun in your deck.
My Idea for a fix is, When you use a stun on someone it gives them a 1 turn Aura that gives 100%stun block. That way if they are stunned again that or next turn it will be blocked. and making it so the opponent isnt forced to only use 1 stun per match. but you arent stunned every turn. (The exeption being Madusa gives a 3 turn aura)
Here is a more personal problem that I had noticed. Stuns are almost completely useless in later game. All bosses block and Elites block too. the only guys you really need the blocks for block them.
Here is my Fix to this, How about instead of giving them a 100% block, Give the bosses a 60% block and the elites a 30% block. So using the stuns in those battles wouldn't be completely useless.