Mahtook sounds good, because it sounds like he's a hitter first who also plays a nice outfield. We've got Jackson, Szczur, Ha, Na, and Silva all angling for CF. We don't have to get a CF in this draft. And a good defensive LF would help, too. So if he's a good hitter, and he's a 15-20 guy rather than top 10 because he's an uncertain CFer rather than because he's an uncertain hitter, I'd be more than happy to consider him.
That said, I'll be totally astonished if it's either Mahtook or Springer. I totally don't think they are guys we'll take.
One comment on Wilken's bats: With the exception of his first and most infamous pick Colvin, I think his tendency has been to go for contact hitters. He's taken a lot of contact hitters who have proved out to hit pretty well for contact. Clevenger, Vitters, Lemahieu, Barney, Cerda, Szczur, Guyer, Josh Harrison, Ty Wright. A high ratio of position players taken in the upper rounds have been contact-first hitters, with speed and power secondary. Colvin, of course, has been an exception. Obviously four K-kings are Jackson, Tony Thomas, Colvin, and it appears that Reggie Golden's swing is also full of holes and that he's going to bust. (Based on Az Phil stuff, he looks like he's k'ing continuously against these teenage Dominican pitchers.)
But I think in general he's got a fairly good eye for contact hitters, and a seeming tendency to value them.