great plugin here! I'm happy I've found Site Layout Customizer, I'm going to use it on many websites :D
However, I'd like to be able to choose between categories or tags. The website I'm working on right now has only 3 categories, all the pages are "filtered" by Tags. So the plugin is not useful for me at the moment.
So, being able to Filter posts by Tags is my suggestion!
Thanks, and keep up the great work!