Keithro, thanks for taking the time to provide feedback.
Using a full sewn in floor was a design decision for providing increased flexibility with some other usage ideas over time.
Here is a picture with the cover on, it does have a similar ~12" height as other RTTs when folded.
For mattresses, bottom line, for the low volumes I'm dealing with, others can do it better and cheaper. Makes more sense just to send people their way. For my personal tent, I'm using their 3" HD36 Regular Medium foam. I'm in the 165 lbs range.
So far I have not found wind blowing under the tent to happen, although I have not been out in more than light gusts at this point.
My initial focus is Trailer Top mounting, so I have not put much time into a "production ready" ladder. That said, I do have a few solutions that would take minimal fab work on the customer side.
I'm working on some gear organizing/storage solutions that will be general purpose and usable in RTT also.
The side windows have an overlaping flap and tie design that always them to be partial open for ventilation while keeping the elements out. In the picture notice where the zipper is at the top of the window.