Mark...
First off, thank for taking the time to share your thoughts.
You said:
"...is it essential you paint the backdrop YOURSELF?"
Very insightful question there. I had to give that question some thought. My answer...
For sure, there are some FANTASTIC artists that I could commission. I see painted backdrops here at this site that are very impressive.
In my warped case: I "THINK" it's because when it comes to all aspects of a layout, I want it to be MY EFFORT... for better or for worse. I don't really know why that it is... but over the 50+ years I've been into model trains, it's always been the case. Since early on, I've always wanted to do all the work on all the equipment, and all the aspects of the layout, on my lonesome. Thus if its successful in conveying my vision, then I've succeeded. Conversely, if it isn't successful at conveying my vision, well... that's on me too. I can deal with that.
You also observed...
"As you know, Sn3 has more mass and is easier on the eyes."
It is a nice size. The downfall of Sn3 was that there was no easily attainable equipment for 19th century Colorado. EVERYTHING had to be craftsman level kits (such as the Railmaster C and D class locomotive kits), every piece of rolling stock had to either be sractch built, or heavily scratch-bashed, kit-bashed, etc. I simply grew tired of the constant tedious work the equipment was requiring. I think I recall 60+ hours in assembling this (picture below) Railmaster kit, half that already in engine #2... and I needed a half dozen engines for my layout theme!!
Rolling stock was pretty much the same way, except no actual kits were available, so even common cars such as gondolas had to be scratch-bashed:
And, I needed more than a dozen or dozen and a half of them, as well that many (or more) boxcars, flats, etc. Very little was available for the chosen era.
So that's what happened to Sn3: The modeling intensity level it required killed it.
"And On30 has some nice locomotives that might be workable for you..."
I took a very serious look at On30. I didn't like the coupler height compromise, and i didn't want to set in and have to modify any and all On30 piece of equipment a standard coupler height. (Which would have been a pain in the behind for the On30 2-8-0 C class I had purchased for a look see, etc.) So, I tossed the towel in on that idea before it went very far at all.
You also correct that modeling the TOC19 era isn't for the faint of heart. As I mentioned in my original post, my problem this go around isn't the intensity level (though I'm having to "fix" just about all the equipment to make it acceptable)... it's the tiny size now.
I've woven a very tangled web.
I have about 1-2 years to sort it out. The outcome will be one of two events:
1. I'll see that the painting OR the tiny trains AIN'T for me on the long term, and I'll make the needed change within 1-2 years. (Earlier if the painting kills it.)
2. I'll decide it's do-able for the foreseeable future, and try to get as far as I can before my dexterity and/or eyesight gets to the point that it's simply no longer fun (10 more years?) to fart with such tiny trains. At that point, provided I have enough stamina to take the next steps that will be required, I'll chainsaw the TOC19 Colorado layout, build simplistic shelves around the wall... and make a 3-rail layout to finish out my life with. Given the VERY forgiving nature* of traditional 3-rail, I "THINK" I can handle it until I'm at the "drool n' diapers" stage... at which point it won't matter.
* Forgiving nature: Easy to put on the rails and/or re-rail, large enough to handle easily, no delicate details for unsure hands to damage when equipment gets knocked over/etc, easy to work on, forgiving couplers that are large enough to actually make manual uncoupling do-able (if I don't want to avail myself of the electro-magnetic features), and such things as these.
Yes, a move to 3-rail would change my theme (would go back to urban double track main w/industrial siding/spurs), but if it comes to that, so be it. Traditional 3-rail is would still be miniature trains running on miniature tracks, in a world that I created which (to me) would be better than no trains and no layout. In other words, sort of like what is in this picture that was taken during some experimentation along these lines some time ago:
Of course, I would want a more finished look: Weathered (and closer spaced) track, weathered equipment, cinder ballast and yard, bushes, weeds. vegetation, etc... but you can get the idea from what's above. I could be okay with the above... but I really do think I need to see where I'm at on my desire for TOC19 Colorado layout.
Thanks again for sharing your thoughts. As you can see, it made me think!
Andre