Can we PLEASE stop giving bonus damage to monsters?
Dear lord, every champion that gets bonus damage to monsters becomes directly balanced for the jungle and loses their ability to play in a lane at all. Shyvana's PBE buffs to her Q are great, to burnout are terrible. Not only does it make no sense since Shyvana will never be used competitively as a jungler again due to ganks being far too valuable, but every time somebody says "can Shyvana get buffs?" that answer will be "NO HER WINRATE AT LOW ELO FARMING UP FERAL FLARE IS 50% SO IT'S BALANCED."
Do not do the 20% damage to jungle bonus. Look at removing other bonuses to jungle damage. Give Sion 3 HP per minion so he can lane.
Look at Kha'zix. 20% bonus damage to jungle! Not the best laner, but some people try. No wait his W loses 25 damage. Now his W goes up 2 CD. Teehee.
because if you are denied that one trick, you've lost. One trick ponies by definition have no options to counter-play the other team once they are shut down.