Pogre,
Even a single person sitting directly in front of the screen benefits from "at least" an alternative "useful" speaker configuration and experience. The setup/design in my OP allows you to alternate and enjoy your speakers in various ways. Also, by alternating through the various "useful" configurations afforded to you via this setup/design, one maybe realizes, enjoys, distinguishes and appreciates the benefits of each configuration "refreshed" by not getting stuck in any one particular listening experience "ghetto").
Who on God's Earth sits directly in front of the screen? This "setup/design" reminds me of when my brother either drives too fast or too slow, takes the wrong road and I'm following him and when he has really gone off the reservation I flag him and ask him to pull over (this was a few decades ago).
I walk up to his car and ask why we're going 50 in a 65, then I ask why the hell we are going so out of our way and he gives me his versions of logical reasons to go so damn slow, and another ludicrous reason why he decided to go so out of his way to get to his destination.
He believes his ridiculous reasons so profoundly that when you're stuck following him again and this time he is doing 50 in a 35 and taking the better route he has equally ridiculous reasons.
Most people say, I felt like going 50 in a 65, this is the route I like but nope, he would give an essay on why he was right in doing what he did. Not a single solitary soul will follow him any longer.
Your "setup/design" does nothing to enhance a thing and when asked questions you, unlike my brother who would go into a long diatribe, have no response save read the OP.
How about answering some questions if you'd like this "setup/design" to be taken seriously.