Originally posted by Shockwave: "Perks slightly affect the probability of finding like-themed magazines and parts for those recipes. Perk into shotguns and you will notice more shotgun magazines and shotgun parts appearing in the world. It isn't a significant bonus but it does prevent the player from being screwed over."
To me this says if my byddy the looter is speced into snipers and spears and he loots a crate, he will be MORE likely to get crafting books and parts for spears and snipers and LESS likely to parts and crafting books for shotguns....
Which is EXACTLY what I said. It seems like in order to raise my chances of getting MY things I have to be the one to open the container.
It does not reduce the chance of other loot; You just find more of the thing.
So if you would get
1 sniper 1 sledgehammer and 1 knife book, but you're specced into snipers, you'd get 2/1/1.
Note the phrasing.
"Perks slightly affect the probability of finding like-themed magazines and parts for those recipes. Perk into shotguns and you will notice more shotgun magazines and shotgun parts appearing in the world. It isn't a significant bonus but it does prevent the player from being screwed over."
At no point does it say "More of THIS, And Less of THAT".
And again, You're still making the assumption that TFP did not do the same thing with having these skills that they did with Loot Stage; In a party, it may, and likely does, take account of the skills of ALL PLAYERS IN THE PARTY when determining which books to give.
We just don't have all the details yet to be able to KNOW that it DEFINITELY makes co-op play worse. But there IS reason to believe they would have considered something like this and accounted for it.