One guy that I have not seen get the press but I've seen play a couple of times and who looks like a 1st rounder to my uninformed eyes is Hunter Bishop. He's really coming on this year - hitting 400+ 10 jacks. With ASU breaking into the top 25 this week people are going to start noticing him.
BTW I follow Cal and last year I heard that Vaughn might play some C this year, which I think could have increased people's opinion of him defensively. He pitched for Cal frosh year and can throw upper 80's topping 90 off the mound so while he's obviously a little short for 1B he does have the arm for 3B or even C, which he played some in HS and before.