We have a "floating" front fireplace opening as we removed our raised hearth years ago when we remodelled our home. It was pretty high but when we changed the room we decided to have marble framing installed into the floor and around the fireplace opening instead. Last year we decided to get a gas fireplace insert installed and went with an Avalon. It looks great and sits fairly flush to the wall. It doesn't look out of place at all. And we really enjoyed being able to turn on the fire instantly with our new remote control. Made last year's winter easier to bear. No mess with logs or ashes any longer either!

I have a brick fireplace. The previous owner painted over it, and then stuck the ugliest stone on top of it. We want to resurface it and take the ugly stone off of it and expose the brick again. Here is a link that might be useful: uniflame fireplace

I know you said that you aren't changing the carpet, but might you consider it? Only because, I'm assuming that is a gas fireplace, there is no need for a large tile area in front. You can go for a narrow hearth or no hearth. If you wanted to do that, unless you have a large scrap or can match it, you're stuck with the large hearth. I like the idea of doing built-ins. As they would be asymmetrical anyway due to window placement, you may just want to build in on the right to accommodate TV and components and leave the left side as is. Not that I'm suggesting this style, but just to illustrate a tv next to fireplace built in, one side only. Something like this might work for you, but without the overmantel. Note that this tile surround is very similar to your hearth tile. If you like that look, you could get more tile, perhaps and then tie it together that way. [Eclectic Living Room[(https://www.houzz.com/photos/eclectic-living-room-ideas-phbr1-bp~t_718~s_2104) by Shallotte Fireplaces COASTROAD Hearth & Patio

Ah, so you do have another space for lounging/TV watching. If you're pretty much sure you'd rather have a TV here too-I'd be satisfied with a (say) credenza or something to host a smaller size TV, which you can surround with some shelving with books, or maybe art..you can bring in plants-a lot of them..lots of interest since some of them grow like crazy and are virtually indestructible..)) and they always look at home-any style, any room you take, you can't go wrong with introducing plants, Remember Clifford Simak's purple flowers? lol you can paint the walls..you can wallpaper them if you're brave..you can put a mural on-there are some amazing ones. there are many many ways to make this room interesting. also don't forget-you look at it now while it's empty. but when you'll actually live there-you'll have furniture, fabrics, books..now it's a blank slate but it won't stay this way. it will be you and your family plus this room. it will be interesting enough without the feature wall. which you still can decide to do-I continue to think these wood planks are way cool..but they might be too overwhelming..and I would think very carefully about how to incorporate them, and whether it's worth investing in. That's personal of course and you might find that yes, you really want it, TV or no TV. Then I'd introduce more of that wood around..maybe wooden frames on art? maybe woven shades in the window? maybe painting the mantle another color so it'll blend more with the walls? And I'd use this plank wall more heavily then if I decide to put it in..it's a big space, and it might be useful and very very cool to have more on it than just the TV. Whatever you decide-it's exciting. Lots of possibilities here. And yes you're right..you don't need to match the wood finishes. You do need to consider how they will look together..in rare instances mixing just doesn't work. Say red mahogany or similar very expensive woods..)) find it hard to incorporate lol. Passed on amazing nightstands several years ago..the most useful amazing high quality nightstands I ever saw(on Craigslist)) but they just didn't blend in, what can I say.. But I don't think that's your case.