@B1GEast I understand your thought process here (don't know why people had to react like they have), but as of right now we only know that Adams (if he's still here) and Gilbert will be ready to play major minutes at guard in 2017-2018.
Vital is a question mark until we see where he is at the end of this season.
I've also seen MAL enough to say that I'm unsure he produces that much as a freshman. Makai is a good slasher and can take it to the rim, but right now you can give him the 3 point line and sag off a bit, and his passing is relatively unknown.
Having a one and done in Diallo at the 2 would give Vital, MAL, and even Gilbert more time to develop, then you can introduce a couple of freshman guards in 2018 with 3 veteran guards on board.
And this is all a bonus when you consider the legitimate benefit of putting potential star talent in the NBA.