From peoples responses it sounds to me like
Zkittles must not influence the potency in a cross. Allowing the stronger strain to pass its potency right on through, cause Zkittles tests in at around 14% or at least that's what I hear.
I enjoy smoking on less powerful smoke, during the day when getting hammered is less desirable. So even if they weren't heavy crosses, they would still be useful and even desirable for many.
Does the Zkittles transfer any of it's positive qualities like taste and yield towards the offspring?
I hear Zkittle concentrates are insane!