Full offline interactive export
Complete html or other export, which will allow me offline browsing of presentation, including all the pictures and fonts, does not have to be editable.
Maybe take an inspiration from Prezi Pro single file export.
AdminOwen (Owner, Slides) commented
This already exists through the Dropbox sync functionality. With that turned on your presentations, including fonts, images and all animations, will be automatically stored in your Dropbox folder for offline access. Changes are automatically pushed from slides.com to your Dropbox folder when you save so you never need to worry about things being in sync.
If you don't already have a Dropbox account it's possible to sign up for free.