Thank you for your tips !

I totally agree with Pinpoint but why not take Arrow Recovery ? Is Scientist really usefull ?

For attributes, i was thinking of maxing Dex (increase arrow damage), and put the rest in Speed and Perception. Am I right ?

Do Bow/Crossbow abilities increase magic arrows damage ?

I do like the aeortheurge spell : Teleportation, it seems really interesting to place barrel or create group of enemy before throw a grenade. Or to use it with the Scoundrel bomb. But i'll need int to reduce the cooldown ? So is it really worth ? Maybe with LoneWolf ?

What's about Telekinesis ?