To complete my previous answer, I mentionned the use of notification to inform viewers when an action is required from them or something happen in the extension
I made a quick gif of a suggestion of how it could be integrated with this RFC, using the same design
…
Thanks for the contribution! I can tell you that we are investigating creating a standardized in-player notification system for extensions as a followup to this work. We just don’t have firm details on the timing or specific feature set yet. Our aim right now is to solve the current pressing user issues with component extensions and then follow up with things that continue to improve the experience of the new model.