BA's list of the top 20 prospects in the PCL is mighty impressive. The Mariners have four representatives, Pineda at #3, Ackley at #5, Smoak at #9 and Halman at #18. That seems about right to me.
BA's perhaps predictably a bit higher on Pineda than John Sickels seems to be, and they're still impressed with Halman's physical tools. Ackley at 5/Smoak at 9 also feel about right.