Add me to the list of individuals who would eventually like to see such a plug-in. I also would like the added benefit of, a chest which is assigned to a person, and if you die, your stuff goes into it. If this seems too cheaty, then let admins control what can go in/how much can go in (that's less important than just getting it). This is why I quit Everquest and one of the biggest things that made WOW better than EQ, at least, in the beginning; so, I realize it's a game balance issue; but honestly. let's focus on the stuff that makes it fun.
Just thought I would mention now, but. With LWC/Chestprotection they is still the bug where, if you place a dirt block under a chest, and till the soil and add seeds, this breaks the chest above it. allowing folks to steal with this method. I would like to see this fixed if this plugin is ported.
LWC is now ported: http://forums.bukkit.org/threads/lwc-1-45-lightweight-inventory-protection-management.967/ That isn't the plugin's fault, it was the underlying mod (hMod). Same with every other glitch (IE magic carpet, etc etc)
