Quest for Units

Jon Abad asks:

From now on, i’m ranking my projects in Devil to Details ratio instead of “easy to hard”… what should the units be?

I love this.

Jon explains further:

I read somewhere “the devil to details ratio was all out of whack”
which is what made me think of it as a great measure of project or task complexity
i think ideally, you want to get to 0 devils
initially, you’ll have an unknown quantity of both
but you’ll say i have “10 devils in 20 details”

or if its really bad, 100 devils in 20 details

Anyone have any recommendations?