Awesome plugin @MSzturc ! I already created a template for future use.
What I noticed, as I was testing was that the live preview flicks on and off constantly whenever you are making changes. This is distracting, is there a way to make the refresh either manual or less distracting?
I also enjoyed your custom tag for auto-layouts. I wonder if it makes sense to have some standard layouts like the ones on powerpoint (image on the right, text on the left and a header on the top for instance) that you could easily swap between slides? These would probably need to be provided as custom CSS I guess and then tag every slider with a comment to use a particular layout.