I have two (2) ideas that I would like to share, the first is a command that will enable you to refill buckets. Both of these ideas are for convenience, you could use them as VIP commands if you wish to encourage people to donate to the Innectis server.
The bucket idea would be a command that refills your bucket up with water, this could be done by saying /buckets # water, you would replace the # with a number, this would be the number of buckets you wish to fill up and the water could be replaced with lava if you have permissions to, this could be a command that builders may receive. However the original idea of being able to refill buckets came from that fact that you can create an infinite source of water, so it is of no real high value, lava however is less common that water and may be useful for builders to have.
The backpack idea would be a command that opens a chest, like the /trash command however when you close this chest and re-open it, the items would remain in there. Perhaps you could purchase this upgrade with PvP points or get it by achieving a certain rank of VIP, but this command could be used for convenience of holding more items. When you die, items would stay safe within your backpack however they are not quick to hand, so this wouldn't give you a way to cheat loosing items in PvP. Possibly if you upgrade your backpack further you would get access to a large chest, or even multiple chests with /backpack #.
I hope you like my ideas, feel free to comment on then and possibly adapt them if required, I am unsure how convenient you want to be to your users.
[Lord] Nosliw,
Goldy VIP