From what I’ve read about him, his strength at the point guard position comes from his ability to control the tempo of the game, and get the ball to other players at the right time in the right position.
Let’s assume that’s true for a minute - let’s assume his handle isn’t the tightest as you suggest (although, the sample size there is nearly non-existent), and let’s further assume he was “high with the handle.” And then let’s look at one of your quotes: “Also, the jump shot off the dribble looked very mechanical and there was no lift on that shot.”
All of that above - you’ve just described Chauncey Billups in the NBA. High dribble, not a particularly tight handle, mechanical jump shot, no lift, but a guy who is a good shooter and controls the tempo of the game masterfully. I’d also say everything you said there would apply equally to Jordan Taylor, a guy you compared DeJulius to, but to me looks more like Brooks.
Obviously, you could end up being completely right, who knows? I’d agree Brooks doesn’t jump off the film as a “must have.” But some guys just know how to play, and are very effective without great physical attributes. Scottie Reynolds would be one example. Back in the 1990s, Lawrence Moten would be another - he wasn’t a great athlete, wasn’t a great shooter, didn’t have great size, but that guy was just a very effective scorer. Other than perhaps his shooter, I’d say the same about Seth Towns - no one’s watching his film and thinking, “wow, this guy is amazing,” like you might with a Josh Jackson, but we targeted him early and as it turns out, it seems like he can really play.
And yep, withdrawing Towns’ offer and/or “moving on” seems like it was a big mistake. A class of Towns, Tyler Cook, Teske (we wanted him from the start, so he was always going to be part of the 2016 class if he committed), and Bryce Aiken would actually look really good right now, and was seemingly very achievable.