There is a major simple solution to knee squeeze. Seperate the seat seperation by 100mm to 300mm easily allowing extra legroom, lose a couple of rows (big deal do some pricing and marketing).However it appears that no one that designs these seats nor approves them in aircraft will ever sit in the...

The issue is and always will be the number of toilets. Would like to see how that curtain complies with the 90 second escape requirement? Or can only business class use the front doors? Irrespective of the airline given there is no attendant on area as per much larger airframes.