Mine is wall mounted in lounge but there's a shelf unit underneath for Sky box, games consoles, sound bar and dvd player (though don't remember the last time that was used). The TV could easily stand on that unit and take up no more space.
None of those things need to be on a shelf unit underneath the TV, or even in the same room. You have them there because your adjunct appliances have always sat in the same unit as the TV, but with cables run through the wall (which is way easier in most houses than perhaps some might think) they can be anywhere. Best of all, they're wireless these days - you can control your Sky box from your phone, your games controllers are wireless and you don't need to put physical media into the console any more, and by your own admission you don't need a DVD player any more. You could put your Sky box and games console in a cupboard or out of the way somewhere, wall mount the soundbar beneath the TV, and give the DVD player to Oxfam.
I have just immeasurably improved your feng shui. You're welcome.