4th Master tree?

I was thinking about this for a long time. We know about the current Masteries right now. There is one for offense, one for defense and one for utility, which is generally for supporting. Right now if you want to Jungle you have to dabble in all 3 of them. You definitely need the Runic affinity from utility. You don't need the tough skin or bladed armor for defense but it would be good if you get it. And you also need the offensive masteries that give you bonus damage against minions and monsters.

I propose that they make a 4th Mastery specifically for jungling. That why they can take those special masteries from offense, defense and utility and all centralize it into one mastery. I understand that doing this will force junglers to have to get into one mastery for their bonuses, but its also the same problems for supports at the moment.

This is just a thought that I had and would like to get other players feedback on it. Please don't just shoot it down thinking its a bad idea. I would prefer that we get some good constructive criticism. I have a rough idea about what it would look like as the tree. Ask questions about it if you like. I will answer to the best of my abilities :D