One of the things that always annoyed me with old electric stoves was the thermostatic "cycling" of the burners when they were run at less than full throttle. GE ranges with the pushbuttons were much better, in that they would couple to either one side, or both sides of the 220 volt circuit, and engage different sections of the element depending on what temp level you selected.
I purchased a Maytag "advanced cooking system" range with conventional coil tops when I bought my house becaused it used a solid state SCR control system for the surface burners. It works just like a dimmer for a lamp regulating the power that goes to the coil. Updating a Flair (or any vintage electric range) with the same system would be a really nice way to increase it's performance and ease of use. I imagine it wouldn't be too hard either, since all the electronics could be hidden behind the scenes, it would not detract from it's appearance.
...it's sort of like putting EFI on a vintage musclecar. With the hood down, you don't notice any difference (until you start it on a cold morning, or fill it with less petrol)