Thank you, nice concept, I believe it will work well with the Columbus. I'm on my third one, a Carbon Fiber and while AutoHome has made great advances in the composite shell, the mattress is better but I see three advantages and only one disadvantage.
Weight - The mattress in my new small Carbon Fiber Columbus is about 7 to 8 pounds, so it is light. The mattress in my old medium Columbus Variant was something like 20 pounds. If you have an older AutoHome tent and don't want to go to the expense of a carbon fiber tent, you could save some weight by switching.
Comfort - That is one thick mattress at four inches, there is no way you could put a conventional foam mattress that thick in a Columbus. Current mattress for a Columbus is about 2.5 inches and the Maggiolina at 3 inches. Let the mattress inflate when you open the tent and last thing you do in the morning is open the valve and let the air out, then you could close the tent.
Space - When you are using a Columbus in cold weather, you have a lot of bulk with comforters, feather beds, heated mattress pads, that take up space. It is sometimes difficult to close the tent because of the bulk and temperature, stuff doesn't want to compress as much, so you would in theory be able to carry more in your tent's shell.
Ventilation - when you are using sheets and blankets, civilized camping, the foam mattress breathes well making the mattress more comfortable. They absorb a lot of moisture. I'm not so sure that an inflating mattress would breathe, or feel as comfortable in a compact tent.
Interesting possible upgrade, especially for the older tents, please give us your thoughts when you get it all put together.