(because of the extraction/merchant gold bonuses that these items then provide).
I agree that locking would be a nice feature, but I thought I should mention that wearing gear with those two traits does nothing. It only affects what you get from selling or deconstructing that piece of gear.
There are a few that might help
ItemSaver-puts a mark on item but doesn't lock it out
To date I havent got any addons, because we have 4 computers all with it installed (all mine...) and they all use the same account. Its a giant pain in the rectum to update addons and ensure all have the same addons, so Im just not using any.
Because my son has one character on the account, and my husband has another (the other 6 are mine), it can get very hairy, and there have been some instances where something I have banked for a character, or to research later, has been deconstructed by either my husband or my son.
While having the addons is fabulous, it would be nice to have it as a native feature, instead of having to create it for myself.