I'm also looking forward to seeing whatever improvements KT makes to the visuals in FE 2022, I hope they can make the game look at least somewhat decent. I think you've mentioned this before, but that one shot of the front of the church from the reveal trailer looked decent, so I hope they can make this next game look more like that in the actual, final product.
The game whose visuals I'm (unsurprisingly, knowing me lol) really looking forward to seeing, though, are FE4R's. I dunno if you've seen this, but yesterday in the discussion thread Nate straight up confirmed that next year's remake is actually being developed by IS. I really want to see what an HD FE by IS would look like, and I'm pretty confident FE4R will look loads better than either KT FE (especially 3H lol) and be up there with Origami King as one of the best looking Switch games, and act as a great sendoff of the FE series on Switch. And the best part? It's not even that far away! As long as everything Nate is saying is accurate (no delays, etc.) it'll be amazing to have a brand new FE this year followed by an IS remake just a year later! I can't imagine it'll be that long after FE 2022 that we'll get the reveal of FE4R either.
As far as how faithful the game will be, I give it a 50/50 chance of being different. IS may very well intend to keep these games pretty faithful to the original, maybe with a couple new mechanics and some QoL improvements. However, SoV did get a lot of criticism for sticking too closely to the original, and iirc they were originally gonna make the game more different from Gaiden but ran out of time, so I could see FE4R having a lot more changes to improve the game than SoV did... as long as they don't run out of time again, I guess. I'd hope not given the 6 year gap we're looking at between SoV and FE4R lmao