Quote Originally Posted by Snowbluff View Post
I've thought about letting casters "hand off" a concentration spell to a willing participant. Basically when cast a spell on one target you can let them concentrate on it instead, using their save and their "concentration slot" instead. This would technically be a buff to casters, but personally I like the idea because it encourages casters to spent more of their spell slots on buffing teammates.
This is basically the artificer's big T3 feature. It's regulated by being limited to half casting progression and and only one spell per day though 10 times a day is a ton.