@audiodidact Throwing a blanket over the TV might (or might not) make it suck less. LOL. Change nothing until you have a plan and are armed with proper advice. Its fun to sketch and come up with ideas but I certainly wouldnt commission anything until you know exactly what the end result will be. For instance, your sofa may or may not be helping. Different fabrics have different reflectivity and absorption properties and you will be surprised to learn that rugs, drapes, furniture and carpeting all contribute to the acoustical space and none of them, none...will deal with bass issues. That only comes with proper and strategic trapping. If your room needs it, and they all do, then that will be your starting point....Dont start this journey with only a partial plan.
GIK Acoustics
ASC