I am in the, it would be a useful feature camp as well.
That said, I also prefer simplicity and reliability and a central inflation system sounds like the opposite of that (years down the road).
But from a general consumer level, average intelligence/mechanical aptitude perspective, even if you base it solely on the small sample size group here on rvnet where folks "should" be a bit more saavy given their hobby is towing or hauling, you'll find that the average person is lucky to know "how" to put air in tires, much less how much and when and why.
So unless the central air system was also automatic and load sensing, it would result in plenty of screw ups by the trailer backing assist crowd! lol
To answer the question though, yes I'd trade 360deg cameras, trailer assist, braking/steering assist, TPMS nanny, massaging seats and a host of other useless cr@p for central air. Absolutely