I think this is one of the dumbest designs ever. I feel I can safely say that, as I have one too ... a large area over the front door, about 20 feet up and only accessed by our tallest ladder. I've been up there a few times, and it's kind of terrifying (I dislike heights). For our architectural faux pas, I've placed 3 very large African baskets and hung a couple of Navajo rugs on the side walls. Because this is very much like a weird little "room", I've also placed a larger Navajo rug on the "floor" of the space and that's what the baskets sit on. It's minimal, but because the items are quite large, it makes a rather artistic impact in an area that's otherwise just sort of ridiculous. Good luck with yours. I know these spaces are a challenge!

Remove everything and live with it awhile. It may look empty to you at first because you had so much there before. I'm assuming the 10 x 12 is vertical wall space? Post a photo. Maybe an oversized light fixture in the entry instead would give you a better focal point.

^^^^^^^^ this !

Can you post a picture? It sounds like a huge dust collector. I'd probably leave it empty.

https://www.addicted2decorating.com/q-a-how-to-decorate-the-ledge-above-a-front-door.html