Selling Safeguards

I think that ANet should expand the safeguards it uses to prevent people from selling certain things accidentally, like armor or weapons in sets. They could prevent a lot of heartbreak by introducing these safeguards for, say, any gold/green item, rare crafting material, or vial of dye. Since these are items people virtually never sell to the merchant anyway (except maybe golds, but that is still rare), this change would help careless sellers keep their rare and hard-earned items safe from accidents with minimal inconvenience. Any thoughts/comments/additions?

There's your problem right there, nothing else is in concern...