Hi Ateros Team again 
I'm here with new drop plugin called OtherDropsReloaded
OtherDropsReloaded does everything that OtherDrops does, and then some. One of the things it features is the ability to have entity or block drops replaced, only in a certain region. This can be specified in the config.
https://www.spigotmc.org/resources/otherdropsreloaded.26068/