Maybe Pariden should get -1Hp per level, but +2Hp per earthshard? That could be a nice balance. It pushes them to really go after shards.
, I think paridens shardbonus is rubbish, I would never get enough earthshards to even the score even a tiny bit. I get way more levels than I get earthshards, and the tiny boost to resist and mastery is also pretty useless.
On average I am at the point where I am not putting new posts up about this, since I feel we talked it over tons of times and agreed that balance was bad, might just be me agreeing though 
Sincerely
~ Kongdej