So presumably you’re looking for a big TC.
Idk anything about RV manufacturing but like others said, I don’t believe they’re like Burger King. Can’t have it your way, lol.
Presume you’re looking at bigger TTs because plenty of small ones without slide outs.
Suggestions:
1. Get a slide out model with a slide out that is very useable retracted, and never use it. It’ll help with resale and hurt nothing.
2. Get a toyhauler. Lots of large bp toyhaulers with no slide out. Bonus, more open useable living space than the same size TT. And other benefits like a porch, huge water tanks and most have built in gas generators with big fuel capacity, heavier running gear than similar size TTs. Another bonus, ability to carry toys easily whether it’s bikes or a big bbq or kayaks or if not typical motor sports toys.
3. ATC makes very nice large TTs with no slide out. And you could probably custom order anything in it. Will also cost you about 2x the average mass produced TT. Bonus, it will be on a real trailer/frame and lower profile than a typical TT.
4. Get over it and get a slide out. If you’re worried about issues with it, don’t be.
5. Everything RV is a compromise. And if you’re looking for a configuration that honestly no one makes, then it’s not popular at all and will hurt resale if you did have that. It feels like there would be something larger out there that has no slide out. Aside from the aforementioned.
Hope this helps.