I'm not knocking the gut feeling, I'm knocking the evaluation criteria and the process. You can like Nathan Karns all you want, but you're just being arbitrary if you consistently knock guys down for the same flaws that Karns has, and then ignore them all in Karns.
If you follow Keith Law, then you know that injury issues + no third pitch + strain in delivery = RP for him, and that RP = not in top 100.
This should be especially true for a 25-year old.
I guess I should be happy we have another top of the rotation starter, though!