A) like I say, in practice issues that are only detected after large deployment are small. If they weren't small, you'd have been able to detect them earlier.

B) absolutely, but if a large subset of the jobs recently restarted you get noise and nonsense

C) indeed you can do exponential continuous rollouts, but then you are getting pretty close to a 3 or 4 stage where each stage is a 5x increase in size or whatever.