Paul,
If I'm reading you right you're talking about a simlar orientation as the paramour/paramount but with the signal section all at one end and the power section at the other. I've recently been playing with the idea of making my rebuild of the sr-45s on a narrow and deep chassis to accomplish the same thing of keeping the psu at one end and the the audio section at the other end -- keeping the noisiest parts away from the sensitive gain stages, the audio signal path as short as possible, etc. Thinking something like maybe 6" wide and maybe 18"-20" long. Can't claim originality on that one -- see the audio note kegan and kegeki amps as an example. Of course this is nothing like a golden ratio but could be a nice alternative to having the entire circuit built around a central power transformer.
Not sure this will work yet, but after I cut out some cardboard templates and arrange iron and caps on them, then I'll have a much better idea, but so far, just juggling this stuff in my head it not only looks possible but also that it could easily accomodate a really large pf cap and large ps caps and provide a nice quiet place to mount grid chokes.
-- Jim
Jim Rebman -- recovering audiophile
Equitech balanced power; uRendu, USB processor -> Musette DAC -> 5670 tube buffer -> Finale Audio F138 FFX -> Cain and Cain Abbys near-field).
s.e.x. 2.1 under construction. Want list: Stereomour II
All ICs homemade (speaker and power next)