Remote OBS
Scenes, sources, canvas, and websocket.
Remote OBS is a browser OBS: create scenes, add text/image/media/browser/color/ingest sources, and position them on the canvas.
Output resolution, FPS, bitrate, and codec live under Settings. Websocket (protocol 5) is available for Streamer.bot and similar tools.
The reserved auto scenes must stay. Everything else is yours.