I like making slide shows with your app. It's higher res than video recordings. There are also other benefits in post production.
But, something that would really kick: audio. If I could record the audio along with the photos that would make it great.
Since not every time I use it would I want or need the audio track, it would be ideally a starting option. Perhaps a "Frame and Start w Audio" next to the "Frame and Start" button. Or something like that.
How would one relate the audio file back to the sequence of pics? One possibility is to give the corresponding audio file the same name as the first picture, but with a .mp3 extension rather than picture extension.
I don't know if you can detect the platform or not in the software, but you might want to grey out the option in some of the older models that lack processing power.
