I think is worth it at all. 50% is just absurd amplified damage for any class, and late game -wise may me a must for DPS wizards. I was actually beetween wiz 1 - pyro 3 - linker 2 - featherfoot and wiz 3 - linker 2/3 - psychokino - featherfoot.
But after some theorycrafting i decided to go with wiz 3 - linker 2/3 (still deciding) - psychokino - featherfoot. I can share surespell and quick cast buffs, link mobs and use quickcast to deal crazy damage with magic missile/featherfoot skills and stuff. Pyro would give more much easier early game but i’m not sure about if at level 300+ pyro will have any utility (it should has though)
Ps: just took a look at ur build and it seems similar to mine, the difference only in rank 6-7 xD. Sounds fine, if i went warlock i think i would go for Ele 3 just to max out DPS, but its just me. As featherfoot spells are single target, i got linker to synergize better.
good luck cya


