Did you get any responses yet?

I've been trying to figure that out myself. I have a Lv41 mage and my LnL is just over level 20 and I'm pretty much only using him for boss battles.
I'm not convinced that he is really useful, so I usually end up going back to Blinky instead.

It's possible that at Level 20 he is too weak and that I need to get LnL to Level 30 or 40 to see some real difference...