The slow from hf is taken the same as cold dmg (just cant be stopped with cbf) which in return will only effect wsm for attack speeds, and % slow velocity on frw iirc. If you guys really are unsure, just check the amazon basin ~~
Personally i dont see a problem with allowing doom at all on a ladder like this, the only other blizz build that has a chance at working vs fire/light is the mass +cm/res build that 100% relies on pericing cold res. A doom build would be hardly any different, but would also force the blizzer to make up the lost fcr and res from fathom or a orb, and losing a ton of dmg (at least compared to fathom)
Really isnt op by any means, but again, i dont make the rules for here lol
A vita infin lighter also is pretty viable (mines like 117/86/35k lightning or something like that). It just isnt viable in the long run b/cafter you beat a guy once 1 hitting them with -res, they come back with 50000 lr to counter it.
Although im not sure why none of the lighters play sneaky switch between 200 fcr light, 117 fcr w/s high dmg - res, and pure -res infin setups mid sets to force there oppoents to die 1 hit or lose lots of life/dmg stacking res to gain the advantage is beyond me