My wife views sheet rock as exceedingly simple to work with. She won't hesitate for an instant to have me cut a swath out to put some reinforcement in. She once decided she wanted to mount a thin HD tv in a spare bedroom.
Out came the tools, I surgically cut a section of drywall out about 4' high by 20" wide and like a doctor working through a hole in your belly, framed inside the wall some extra studs using a right angle drill to screw them into adjacent studs.
Got the bracing worked in, pulled the power and cable signal to the location, screwed the 'fitted' piece back (since I didn't destroy it to begin with) and all she had to do was putty things up and paint it. Today you would never know it happened.
She's done this several times... in fact.... I hate it when she's looking up at the ceiling thinking "hmmmmm.... that light fixture would look better if it was scooted over about six more inches"
I know that when she starts thinking like that, I'm going to soon end up on a ladder cutting out a swath of drywall to move the power & electrical box.... six inches. (this is a true story and it happened on TWO different occasions!)