If you look at the examples from April, only 2 or 3 can be counted as unicorns. If in 3 months it's the reverse and only 2 or 3 can't be counted as unicorns, that would show a progressive improvement in the model. I agree we shouldn't take much from day N-1 to day N as there will be a lot of variance, but this can show us progressive improvement over model updates.

Perhaps in a few months half of the generated pictures will look like unicorns, perhaps in more months they will all be unicorns but 2 or 3 will look way more detailed instead of drawn by a 4 year old, etc. We just need to wait longer for the signal to break through the noise.