Hugh, I would personally like the ability to make text hotspots. Currently, you can only make images or 3D models into hotspots. Also shapes–why can’t an arbitrary polgyon be a hotspot?
You can work around the sharing scenario thing by exporting to HTML5, then putting that code on your own server, if that capability is available to you. Or, if an LMS is easier, you can export as SCORM and add that to the server. In my limited testing both have the disadvantage that, unlike actual CenarioVR scenarios, they don’t download every component before playing, meaning long pauses if you use 3D video. With stills they work OK.