Here is an example of (in my opinion) what is being asked for in this post. Assetto Corsa Competizione has a “Projection Correction” option which applies distortion to the mathematically “correct” projection, to reduce the distortion at the screen edges. I grabbed a quick video to demonstrate it. Note the effect is of course more pronounced at a wider FOV.
Personally I’d put this request in the “nice to have” bucket - as a 32:9 ultrawide owner I’ve got used to this feature being VERY rare; I think ACC is the only game I own which offers it!
Honestly, until Xbox supports ultrawide or multiple screens I don’t think this will get any traction. It’s a shame though because the sim needs better support for multiple and ultra wide screens