The only thing "wrong" with  Master Set is aesthetics of the speaker position. 

You may have find the second speaker more forward/rearward  in relation to the "anchor" speaker to balance the sonics.

Visually, it may look lopsided. Great sound once found.
I'm kind of wondering if this isn't what one might eventually end doing either intuitively or by trial and error?

Anyway, I'd like to try it methodically as described but my speakers weigh 130 pounds and are on spikes. It would take a significant physical effort to do it in the tiny increments he recommends. May get some furniture sliders and try it.