Judging lessons by specs

Now that I have finished most regular basic lessons, I often spend time looking for new stories to read.
Percentage of new words seems to me my favourate indicator for a story at my level (I prefer 10-15% new words).
And I like to know the total number of words of the story, to see if it fits my free time.
Number of blue or yellow words are not important for me at all.
So I would like to see a minimal spec description like this: • 2500 Words (12% New)
And in the more detailed list can be added: blue words / yellow words / audio length

But maybe you have different criteria?