Suggestions

adding backpacks?

the backpack would be like the /vault (rank only command) but a single chest and it could be in your inventory as a block-type(like a head or something) and just right click it iin order to open . it will be very cool also to can be purchased from the shop for like 250k(and one sidenote : please reduce the price of the chesthoopers because when you want bunch of them is getting very expensive)

changing the version?

lets change the version of the server to like 1.11 or something in order to have none glitchy elytras, sulkers and observers for our redstone sockets