Well that'd be 2k or so extra morale on my mini which is quite a bit really plus the extra damage. Considering I think both sides are pretty balanced now with same #s, I think this could throw it out of balance again. In addition, I think it's a solution in need of a problem and the real problems aren't being addressed. Not to mention it will increase farming which, imo, is never a good thing.
It's not like that will really make a difference, though. Minis just roflheal themselves anyway. Can't even tell you how many Minis I have 1v1d and done 20k-35k damage and they were still at full health when they killed me. It seems LMs have this feature now, too.
I still don't see this changing much. Classes that couldn't die before will still not die. Classes that can die will take an extra couple of seconds to kill.
What they need to do is stop giving the same thing to everyone. Every class doesn't need and extra -30% inc damage and +20% morale. Battlefield promotions and Audacity should add different bonuses to different classes.