Theoretically sorting plugins might clobber real inventories with the "empty" copy, so just reject all plugin interaction.
May be a good idea to drop all added items at the viewer, because the only source theoretically would be their own inventory.
Locking down the bottom inventory isn't really an option; plugins checking the bottom are liable to use viewer's inventory directly instead of obtaining bottom inventory.
Theoretically sorting plugins might clobber real inventories with the "empty" copy, so just reject all plugin interaction.
May be a good idea to drop all added items at the viewer, because the only source theoretically would be their own inventory. Locking down the bottom inventory isn't really an option; plugins checking the bottom are liable to use viewer's inventory directly instead of obtaining bottom inventory.