Yes I have been around to different shops, and you are right R V Masters is a 1st class set up, and there are many other shops I could not recommend to someone. I do not want to start up as a R V Masters set up (they seem to do it all including a paint booth ) They do not have facilities for full timers, that may be something I could arrange in the future, not sure yet.
My main stay would be upgrades, with maintenance service offered, including Air conditioning and electrical services. I have an excellent cabinet man and excellent paint/stain man. Toad/dingy wiring, brakes, base plate install,
The list can go on and on for upgrades.
As for store area, maybe a consignment type area for items people took out for upgrading, used tow bars, toad brake units, etc... Many people do not like Craigslist. You can buy anything new on line, and many things locally
Just kicking this around now, but the thought is getting more serious. Seems like a business one could focus on quality work at a fair price and growth would come naturally.