Its been a while and there is no new update for use of apricorns which can be obtained by headbuting trees and are totally useless to make game more interesting u can add apricorns converting machine by kurt in jotho region and while adding this function u can also tire the colour of apricorn to their respective pokeball and also the rarest apricorn for master ball. By this player will also go for headbutt trees other wise maximum no one uses them.