Principle of Scale

So, I had a dark and evil secret.  I really want to do ACW in 10mm. On first blush, it doesn't appear to be much of an evil secret, but Pendraken puts out some amazing ACW figures (check them out if you haven't already).  However, here's the problem: I'm seeking orthodoxy in scale.  This means I am claiming the following scales to be core for all wargaming activities:

Heroics/Skirmishing 28mm:  This is for Squad on Squad level activities with individually based figures, whether Super Hero, Fantasy, or World War II.

Standard Wargaming 15mm: This is for elements (stands of 2-4 figures on a base) and the occasional individually based game.  Here I'm looking at the fallback for everything, I have Ancients, Fantasy, WW2 large scale, Napoleonic, etc.  With this in mind I also must admit I have embraced WRG Standard-so 40mm wide for all figures and from 15mm for close order infantry and 40mm for war machines for depth.

Small Scale 1/300 and 1/600:  There are exceptions that don't fit. Jet Age and, after much debate, WW2 Aircraft will run in 1/600.  I have my Horse and Musket in 1/300, and if American Civil War doesn't end up in 15mm, it'll definitely end up in 1/300.

And this is it.  Admittedly there are a few exceptions.  After all, what scale is a Star Ship?  All this said, I'll continue to try to restrain all activities to these scales.  The basis for this is scenery.  Games in part are driven by the battlefield they're fought on.  Consolidation on scale results in minimal requirements for scenery.

I profess this, because, as I've mentioned, I'd really like to do 10mm ACW.  Or some of those beautiful 20mm SCW.  And so it goes.  While I may allow for the occasional justifiable exception (1/72 WW1 Air screams at the moment should I ever try it out), the less the better.