I've been in model railroading since 1970, and have "played" with all the scales except for G and Z. I know what works for me, and what I prefer.
I have been following (and participating in) several of the recent threads regarding wheels and new offerings. I find it all most interesting, and can see all points of view, but have come to the conclusion that it doesn't really matter, does it? As long as we have a "standard" for the track gauge,(and coupler height),so that everything will run together, isn't that really all that counts?
I've set up a large oval of American Models code 148 track. Sure, code 148 might be "too large" to be prototypical, but it looks fine (and works well) and allows me to use a wide range of rolling stock built at various time periods by various manufacturers.
When I was in HO, the code 88 track I used was probably "too big",as was the N scale Kato Unitrack I used to run on. But it all worked, and gave me the opportunity to run my stuff.
I am, as I write this,running an American Flyer #310 Pacific with "tinplate" wheels (except for the pilot trucks,which I've switched out to "Hirail" size,as they look so much better),pulling a train of various makes; PRS,AM,converted AF and SSA.There are some Ace trucks being used, a few SSH trucks,some stock AM trucks and wheels,and even a few Northeastern items.
I guess the point I'm trying to make here is that as long as I have an interest in this hobby,(whatever the scale),I'll have to make some sort of compromise,and that's ok. I can certainly appreciate the more "purist" approach,but even the most detailed and "exact" layout will no doubt have motor vehicles and human figures that don't move, and isn't that a sort of compromise,too?
In the end,it's all good.
Mark in Oregon