I think the server should add the Lockette plugin, that way you could private things you don't want to allow people to, etc. doors that lead to important things only you want access to or a few of your friends.
Shouldn't be too much of a problem on skyblock or creative if you add the right people to your plot/island! That being said, the plugin we have on survival currently is still very versatile, and you don't even need to place a sign on your chests or doors like Lockette. We'll always consider the options though- maybe arrange to implement something, depends on how Sway views the need. I'll write a new guide to LWC as soon as I can get on my laptop again. cheers
Ye but on Creative, if you want to add friends and you just want access to things for you certainly, you can either add the one from Survival to Creative or my suggestion. I think it's a good idea but idk