Could you please submit the idea?
It seems that we can keep the ratio 100 downloads = 1 karma for these peaks? If v1.0 gets a peak 1000 downloads you get 100 karma points. If v1.1 gets a peak of 1500 you get 150 instead of 100. But if v1.1 gets a peak of only 200 then you get 20 instead of 100. Makes sense.