Hi Derek,
Sorry, no info as to further development of iContent. It does worry me a bit that the last time there was an update to the plugin on github was four months ago...but being a maintainer of two plugins myself, I don't think that's too unusual. My general policy on plugin use is to limit my use of new plugins for my production site until I can see a good history of support and updates.
For slide show type information presentation I currently use the Moodle Book resource. I have started development of Sippets (made possible by Justin Hunt's latest plugin for Atto editor) for rapid HTML layout. I am also investigating additional slideshow type capabilities via Generico filters.