What does DDV provide? Off-ball defense, cutting, and (in theory) hitting open looks.
If De'aaron Fox is your point guard, that is what you want.
Remind me again of what our SG rotation is now? DDV, like Barnes, was more valuable to us than anyone else. We can't just afford to throw away rotation pieces at positions we're weak at.
Terrence Davis, a slasher. And Justin Holiday, who was doo-doo for us.,
Even if Davis wasn't a questionable fit, that rotation ain't good enough.
And before anyone says Davion, he like Fox, might as well not exist without the ball in his hands. Even on defense he's more skewed as an on-ball defender at the point of attack.