I think someone above said it, but I'll say it again...
The regen is great, you can be completely out of mana, sit and lich to fm (I'm lvl39, lich takes away 7hp/tick while sitting for me still), click the lich off and you're regening at 40/tick and the rate keeps increasing, you'll be full health in about a minute (at least at my lvl I am)...
Before this you would have liched to near full mana and had your hp knocked down and you'd have to tap to get it back so you can keep the lich up, now you're full so you can just keep a HoT up and not waste the mana on the tap, I can solo nonstop for a long time now and when I do need to stop I make sure my mana bar is burned and my hp is full, leave for a few minutes, come back to fm, click the lich off and you're back at it full mana, full hp, no more than 5 minutes of total downtime, and it really wouldn't speed the process up if you decided to bandage, since as soon as you pop the lich off you're regening at an insane rate...
I wonder if they'll take this away from us...