OMG, please understand what I'm saying, I can't believe that I still need to repeat for my 3rd time?, I'm not meaning to replace all buffs to be a pvp buffs, just a chance to drop some pvp buffs as well, replace cheese sandwich, and Aunt Irmas Basket , solid sandwich (maybe lower chances for Helpful scarecrow and Whips and Carrots buffs as well?),
Why I said replace not just add those? to avoid the chances to drop the chances to get another usable buffs like rainbows and Myers.
In so simple way, to replace useless buffs in drop from drop grid with 2 pvp buffs, not stop your "usable buffs" or even lower the chances to drop them.
Finally, PvP is a part of game, optional, but you still got quests for it, achievements for it, and even a market for it! also pvp buffs not buffs are used inside expedition, it is to boost the production of the buildings that you have in your island, like farms, mills, Major House, mines, ... etc