When you use a sell sign to try to sell a named item it won't work but if you use /sell hand or /sell all it will sell the named items. They both should work the same way or be configurable. I would like to disable named item selling when using /sell because players are abusing this to sell cosmetic gadgets.

If anyone is interested in privately making this change I'll happily make a commission for it :)

In addition to adding this /removename would be a cool command.