Hi guys! I posted years ago on how to heat a treehouse I owned and you lot were crazy helpful so I’m back to ask your expert opinions on how to make my pristine, never-been-used midcentury hearth functional and efficient (if possible?!) It’s an enormous, open on three sides hearth that was stuffed with insulation when I first bought the house. It’s never been used obviously but the chimney is in great condition and I’d love to figure out a way to use it while preserving it’s beautiful look. So no inserts. I was thinking ceramic glass with a blower but my local hearth place is saying that still won’t really make it efficient but will it make it useable? What are your thoughts? Please see the picture. Thanks !