Adding taxonomy for featured images on index
 

Hello. Well, just for fun I thought it would be cool to be able to click a menu button to sort posts on a blog grid index but in a way to just change the featured image.
You know, show only tits/pussy/face/etc. that is set as preferably a global variable that changes the featured image with multiple pics set per post depending on criteria..

Is this easy to do? I know it's possible but is more of a just for fun thing so isn't too important, just curious. :upsidedow