Using the platform for digital display

Hi. We are reevaluating our current digital display system and one idea we had is to use our 11.x platform for digital signage pumped to wall monitors via laptops. In about five minutes I built a page with the featured content slider. Looks good but we do have site wide header and navigation bar. I cannot figure out how to remove the header contents without unlocking it at the root, which turns it off all pages. So question, is there a way to make a blank page that just has the featured content widget? Would that be a case where we would need to build a new theme just for digital display content? Thanks.