External presenter can't join live-event after it started?

I hadn’t but not sure it is addressing the intended use of Microsoft Live. I guess the real question is whether it is intended primarily for internal events or to be used as a general purpose Webinar tool. At the recent Ignite, one of the sessions (and post event blogs) suggested recent changes have made Microsoft Live ready for prime time as a webinar tool. From my personal experience this is not true. It is missing some key capabilities like presenting a custom screen to attendees so they know exactly what event they have joined that has not yet started (we see high drop off when people join and see the generic screen), the ability to track who has come to the event. (The join anonymously is the easiest for them to join but then we don’t know who has joined.) the inability to promote a speaker from the attendee list. We need to invite external presenters easily and without tenant related issues. (Even internal events often include a guest speaker.) Remember, most people join right on the time or just after the time specified. This doesn’t leave a lot of time to overcome any issues that we run into. My experience with WebEx Events, GoTo Webinar events is that we run into none of these issues. The pronto have is that as long as Microsoft (and key influencers) pass off Microsoft Live as a mainstream webinar tool my CEO wants us to use it. So we continue to run into issues that are explained away as the organizers incompetence and not shortcomings in the tool.