A lot of these are likes rather than must haves but they would be nice to have... for me anyway.
Your countertops are my least favorite color/style from the models I'm looking at. They remind me of a friend's garage floor where he put sealant down and tossed little colored dots on it for traction. It just doesn't look as classy to me. The ones in the new Redwoods look *really* nice. It's sort of a marble look. That other brand also has a nice solid backsplash behind the stove that looks really nice.
I like walkthrough islands. The L shaped counters feel like they take too much space.
People complain about the big desk and then eat up more space with a big island you have to walk around to get to the stove or fridge.
I like 5ers with the long windows over the slides in the living area. I can have the blinds closed and still have some light to walk around at night without turning on the lights. It also makes the RV brighter during the day.
I don't like the tall window in the bedroom. I'd rather and a wider dresser with cabinets up above and the window in the middle. Leave room for a 32" TV in the bedroom at least as an option.
I like bedroom slide windows over the head of the bed instead of on the sides of the slide.
Put entrys on your price/order lists for omitting TVs and mattresses. I'd rather buy my own TV that I can take back to any Walmart or BestBuy than have to send a TV in for a factory warranty. And frankly, a lot of people don't like the mattresses you offer. Anyone with a bad back will probably want a different mattress.
Stop putting wood framing around your TVs. If I want to put a 37" in place of your "big" 32 inch tv (what I have in my bedroom) then I should be able to do it. At least leave a little clearance for a TV upgrade.
Better warranty! At this price, it should be better than other Heartland lines.
The large desk and large showers are the two things that put the Landmark over the competitors for me. And since storage is my other concern, the big bedroom slide is important to me. So, here is what I would like in a 5er. Yes, I know you can't get to the bedroom or bathroom with the bedroom slide closed. I've decided full time comfort has to come before occasional travel issues. The scale of things are probably a little off but I don't have your cad software so I had to cut and paste from one layout to another.
BTW, I would like a hutch with an "appliance garage" at the end of the kitchen counter rather than a window in the kitchen.