Marauder Elemental Bow

So I've made this build and I'm pretty sure this will be great late game as a very tough ranged damage dealer.
I'm using burning arrow and bear trap as single target and burning arrow with GMP + fork for AoE.
Besides that am I using decoy totem to misdirect the aggro.
I'm also using projectile weakness, and grace.

Right now I'm level 69 and my build is looking like this:

And my full build will look like this (I've made some refunded some skillpoints and put them elsewhere):

I'd be happy if I could get some useful feedback and/or criticism