Wow! Was the house built/owned by a brick mason?

I can appreciate the design and workmanship, but that is a strong architectural statement that can't really be update without actually doing some work to it, be it paint, schmear, stain, etc.

I wouldn't put anything on it at all. It just creates visual clutter on an already busy structure.

Accessories are all wrong for the fireplace.

Acc

If you squint your eyes, it looks like one of those large pipe organs!

I agree remove the drapes form the sides and wood floors for sure . The FP is IMO that staement in the space no need to DO anything to it including decor that IMO just adds to the style of the FP and not in a good way.

There are a lot more efficient and sleek inserts available these days. Start there. Remove the froofery and let the austerity of the hard lines of bricks be your guide to anything to add back.

Adding wood floors is a nice idea, but will be VERY expensive and disruptive.

Regarding the fireplace wall, what about a very large piece of art to cover most of the upper brickwork?

That is a gorgeous fireplace. I suggest removing the current decor, then putting up a large autumn wreath. Your family member can look for artwork that they love to put up after the holidays.

This wreath is mostly green to contrast with the fancy red brickwork:

Autumn Harvest Pumpkin Pinecone & Gourd Grapevine Wreath - 24" Unlit · More Info

Sheetrock the front above the mantle to the ceiling except the outer brick trim.

I’d try to distract from the brick’s intensity and a tall rounded mirror would help soften the sharp lines.

I'd lose the current fireplace insert that bulges out from the surround, and go way more simple. A gas fireplace insert that's super clean-looking would go a long way. As it is now, you've got two very strong "looks" happening with the surround and the insert and they compete against each other. If you're unwilling to remodel the brick, then go very minimal for the fireplace.

Pay no attention to the painted brick, but this is the type of fireplace insert I mean:

Ravenna CD - Gas Fireplace Insert by IronStrike · More Info

Thank you for all the suggestions! I really appreciate all the advice.

I love the fireplace, but it's very busy. I'd just remove the decor altogether. If you need a clock, get one big piece.

I think I would look for ahuge piece of art to cover that whole area above the mantel if you do not want to embrace the whole thing.

I think I'd hang a tapestry (one with a simple design) to fill in where the wreath is. I would also remove everything off the mantle. I would add fire tools, and a log holder on the hearth.

I’d take everything off the mantel and the chimney above, then put your pumpkin-type thing on the mantel, just like you have them on the hearth, nestled in the corner. Or a richly colored abstract painting on the chimney piece. Move the drapes. A plainer insert would update as others suggest if you have the budget. That is truly a beautiful and awesome fireplace!