I suggest that a plugin that allows us to lock chests to be added

Which server are you thinking of?

Id say creative and skyblock cuz on survival that would be too op

On skyblock if you create a chest in your own island space only you will be able to access it anyways

I'm pretty sure he means Survival

AGH THE BOLD COLOUR OBSESSION IS BACK!

I can understand creative, for when you add people to your plot however you dont want them having acess to your items. 

However I highly doubt this would happen on survival because it would prevent raiding.

A while ago they had the chest lock thing on survival with signs, and I'm pretty sure tnt could still break them. 

Couldn't that be readded?

Idk, up to pat and others.

The problem is; with the version of the Factions plugin we have; An area cannot be claimed adjacent to an enemies territory as it would prompt you with "Must be adjacent with already claimed land!"   

With that being said, the use of TNT would only work if a player were to find an access point to place the TNT, and for the player to be able to crack the inner portion of the area; which again could be forsought as impossible if the necessary precautions were made.