Most of our units are actually 6"-8" longer than their advertised length. The new 'proposed' 21' will be 21', which means we are only looking to extend the existing 19' body by 18". 14" in front of the door and 4" behind the axles. Our goal was to achieve a 'north-south' bed in the front...as large as possible, and a rear 4 person dinette. What falls in the middle is bonus. The kitchen is going to be around 60" long which will allow for a double sink and still leave plenty of counter space. The other side will have the new 6.3 cu ft fridge with micro and storage beside. The front bed will lift with shock assist for access to storage.
There is always the 2-foot-itis market. What we hope to tap into a bit more with the 21' is the down-sizeing market.
Donna...they already make 13' fifth wheels! You just need to put a frame under a camper!