Considering Gram is dealing overwhelmingly slash damage as base I thought Buzz Kill’s +120% slash damage would be a slam dunk on it, yet none of the popular builds use that mod.
Does this have something to do with how damage is calculated that I’m missing or are physical damage increase mods just always a bad idea?
Glad to help! Hopefully I haven’t misspoken–I’m not an expert modder by any means.
I wouldn’t say 90% elemental mods are bad value–they have their place bulking out damage on very low status chance weapons or ones modded exclusively for crit. They’re also good if you want to beef up a status when you’ve already slotted the 60/60 version. Even IPS mods aren’t bad, they’re just very niche (some more than others… lookin’ at you, puncture).
Also, the reason Serration/Point Blank get left off is due to their being replaced by weapon arcanes like Primary/Secondary Merciless. The diminishing returns of putting more than one +damage source on a weapon are too high to justify having both (plus you get an extra mod slot to play with).