Requesting a new plugin tool to be part of MetaHuman in Unreal Engine 4/5 involves proposing a feature or functionality addition to enhance the MetaHuman creation process. Plugins can extend capabilities, improve workflows, or add new tools for customization. Common requests might include advanced facial animation tools, enhanced clothing customization options, or integration with external software for texture mapping or animation rigging. Submitting such requests typically involves providing detailed specifications, rationale for the tool’s importance, and potential benefits to MetaHuman creators and the Unreal Engine community overall.