In a 19ft trailer, there is only so much space to work with. As you get bigger, it's easier to accommodate.
Our old 27ft Sunnybrook met all those (plus a big sink which I don't agree with eliminating). But as indicated, that's about 1/3 larger.
1)Honestly don't care if I can see in the bathroom or what I see (as long as no one is sitting there doing their business.
2) Lots of units have a passenger side kitchen. It's probably the most common layout.
3) It's a trade off, particularly in small trailers. We have a cutting board that covers part of the sink, that way we can wash a big pasta pot or get more counter space depending on what we need at the moment and it still leaves part of the sink open when in place. Some smaller trailers have switched to a 2 burner stove to open up counter space but then you lose the oven.
4) Our current Gray Wolf 22RR has a walk around bed. I would prefer an extra foot at the base but we were purposely downsizing.
Tammy & Mike
Ford F250 V10
2021 Gray Wolf
Gemini Catamaran 34'
Full Time spliting time between boat and RV