its foundational concept is a stroke of genius, in interlacing MD-editing with very aesthetic, semi-automated slide creation. lots of good ideas added on to that, like the way scripts are handled in addition to the presentation itself.
what it still needs: should be better interoperational w/ itself (like copying slides; document internal search) and get better media handling (like auto-reduce media size – like Keynote has; (re-)naming and (ex-)portability of imported images…)
overall, this is is a unique product, and indespensable for people working inbetween text and presentation, in whatever fashion…