don't most speedy players have a higher BABIP?
No. Very few fast guys can keep a .360+ OBP these days because nobody walks a fast guy with no power. Only 24 players in all of baseball posted a .370 or higher OBP last year, of those 24 you had only 7 that had fewer than 20 HR and none had fewer than 10. Only 2 of them stole 30+ bases and that was Braun and Trout.
Hicks has an Austin Jackson/Shin-Shoo Choo/Alex Gordon type profile. Should eventually hit like .280 with a good OBP and hit in that 15-20 HR range with 20ish SB potential. He will most likely start the year in AAA though until the service time issues are over.
The knock on him for K's is that he takes too many pitches. In the majors that means that he will be taking even more difficult to hit strikes than balls
This is a good problem to have. This is something that fixes itself with experience. What you don't want is a guy who just has problems making contact, that is a skill that translates poorly to the majors.