Reply to random control vinyl idea/concept?

Ok so control vinyl is just like a regular vinyl where it gives you like 10 minutes or so per side to play. The grooves in the vinyl slowly spiral into the middle which means every 10 minutes or so you need to pick up the needle and move it to the outside of the vinyl and let it spiral in again.

Well for control vinyl has any one ever thought about makeing the grooves and perfect circle and not go in a spiral. This way once you place the needle into a groove it will just stay there the whole time your mixing and since control vinyl just relays a signal it wouldnt matter if the groove your in just repeats the signal.

I know its not like i could go and get vinyl like this, but do you believe this was ever a concept so you dont have to pick the needle up and start from the outside again you can just keep rocking on traktor or serato.

Anything im missing on why this wouldnt work or reasoning why they kept it a spiral? just kind of a interesting concept i was believeing of let me know