The offer to DeJulius might say more about increased positional flexibility for offers than it does about what the staff thinks it has in Simpson and Brooks (and what it might mean for a guy like Cohill).
In the '16 and '17 classes, you have Teske and Davis, who are big enough to play the 5 and Livers who is big enough to play the 4, with Watson, Matthews, and Poole with enough size to play the 3 (and Matthews being athletic enough to play a small-ball 4) -- and Wilson and Wagner in the class behind that able to man the 4 and 5. Especially if we can get a guy like Johns in '18, you don't need a ton of size in the class.
As others have pointed out, playing two "PGs" in the backcourt has worked pretty well in the NCAAs. Offers to guards and wings might be more about who the staff likes best as players as opposed to filling needs, especially at this point. But we'll see.