I'm just going to say it, you have an amazing plugin. Just some suggestions or ideas to think about adding.
1. More customization like being able to resize images and text, change color of text, Resize boxes to make a custom size, and a way to add in custom code rather it getting overridden by the plugin.
2. Another awesome widget to add would be an image slider.
If you add these things or similar things I thing your plugin would be better than some frameworks such as genesis.