Hey there, just a few suggestions I'd love to see materialise at some point...
1. The ability to 'save' a finished section, column or content element (including content) to be used on another page. It's cool using templates but really this would be better for speedy prototyping.
2. The option to remove the boarder around a quick slider ala Flatten child theme. Would make sites look less cookie cutter.
3. Media boxes that offer hover-over image transitions and also hyperlink.
4. Option to easily change the font styles in any given textual element without using CSS.
5. Option to remove the black opaque backing used on the rev slider text, or at least change it to something more design conscious, like a full width black or white bar.
6. Ability to add section break 'hang-overs', where a design element literally hangs-over the section below, like a book mark or something. The element would be a section just like anything else.
7. Ability to add section header/footer styling, like a ribbon or frame or even text outlines to define the section a little better.
8. A full width section that spins when button clicked to show the content/post loop of another page/custom post. Click to go back.