PATCH 1.2.0 --Life Nerf-- Explained with math

Last night i spend few hours with the new tree and i noticed that the life-only nodes appears less, but there are tons of hybrid nodes now.. i allways hated life-only nodes and usually go for armor+life, eva+life, my weapon+life or mana+life.

The new life+increased life from flasks seems interesting... seething+60% more... hmm

And with the current tree, people mostly use seething's only, but new buffed satureted/bubbling are something to try out.. or just basic things like this:


It seems that with the new tree, you must(hate to say you are forced) go for a very specific build... but isn't that the case anyway?
The game is not that hard until Vaal@MercII, so you can still use random gear before that and start the final gearing @Fellshire/Docks.