Livestream Preroll Visuals - Fotomagico Layer?

I know a Fotomagico layer has is already on the wish list for mimoLive, but now that both YouTube and Facebook support trimming in their editors, I plan to incorporate 15 or 30 minutes of preroll into every live stream. mimoLive already has a countdown timer which is perfect while the audience builds. It would be great to have a slide show and music looping during the preroll also.