I am requesting the plugin PerWorldInventory which is a plugin that gose with multiverse and mvp and all that stuff, basicly multiverse inventorys has been discotinued and the dev rcomended to use the plugin PerWorldInventory. PerWorldInventory is a plugin that lets you and your players have seprate inventorys in diffrent worlds, the link to the plugin is https://www.spigotmc.org/resources/per-world-inventory.4482/ I hope you consider adding this plugin.
-Masher414