i think that we should have some way to store more poke balls,potions and stones. We could have a /home were we can store stuff, or maybe /pv pv means player vault that opens a GUI for a chest, depending on your rank is how much you get 1 pv for no rank 2 for pro etc.
On the original Pokemon games had space in the PC where you could store items too, maybe these could be accessed at the Pokecenter or using /Pc