That reminds me of one of my blue sky projects, a mechanical TV system for steampunk fans. With a circular scan and screen. I keep running into this problem with Constant Angular Velocity not being a friend of a progressive scan, and putting it on the back burner.
But back to the point Liam made; interest in old things is not just nostalgia driven, an alternative is a yearning for a lost time before one even lived. I think maybe there's an "interest gap" between the two, after nostalgists have passed away, it's a little while until it then becomes old enough to be antique, and interest revives.
I personally expect that as everything digitises, the lure of the analogue will strengthen.