Maybe others here know more about Chris O'Leary, or have opinions of his work. But I found this link about his analysis of the mechanics of 20 top young pitchers, as identified in a recent SI piece.
Since predicting Fausto's future is a cottage industry here and elsewhere, I thought I'd pass along O'Leary's take:
"2. Fausto Carmona: Carmona's a gangly guy whose mechanics are a bit hard to read as a result (which always makes me cautious). I like the hip/shoulder separation. However, he's showing the ball to Center Field (which is bad for the elbow), his PAS elbow is a little high, and his timing is a bit suspect. Notice how his GS foot is about to plant but his PAS arm isn't vertical. My gut won't let me be very positive about such a flailing, gangly guy. Yes, Bob Gibson flailed around, but after he release the ball."