User-level authentication, such as platform API keys and whatnot, is a gamechanger for impactful plugin usage via the facilitating of off-platform account-based interaction, among other usecases.
Is there a timeline for this being allowed within verified plugins/the plugin store?
There are no timelines that I am aware of at the moment, user level authentication would change the nature of Plugins from a free for all to use system to a, potentially, only for some system. That does not seem to be the direction OpenAI wishes to take Plugins. For the moment you can take advantage of there amazing popularity and get your product and brand known,