That's a familiar sounding story. My Kuro is higher than I'd really like it, so it's above a cabinet to keep Mrs scene happy... Having said that, like you use l I've not found it so bad, and like you it's not a dedicated room, so compromises have to be made...I did not want it at the height it is currently, my wife wanted a fire so that impacted on the height and the fire couldn't be any lower due to the regulations stating minimum height without a hearth below it.
I could have purchased a narrower centre speaker but did not want to compromise on the sound.
Saying all that it is not that bad to watch at the height it is. At the end of the day it is not a dedicated room (unfortunately).
Sorry for the very late response.Interesting! As big an improvement as they claim and easy enough to do?