I've not followed NCAA much closely, but this seems like a weak class.
Boston might be the lucky ones. They're going to get Hield and he's going to be very good.
I wouldn't be surprised if ends up the best player in the draft.
Hield has a ton of potential. Scouts knocked him down because of his age. Idiotic to me. I think Simmons, Ingram, and Hield all have the potential to be franchise changing stars. With that said, I think the likelihood is much, much higher for the latter two than for the first.
Hield is a guy who should be able to come and make a contribution right away. He'd fit in great next to Thomas. At best he'll be a Dwyane Wade that can shoot 3s, at average he'll be a JR Smith/Kyle Korver shooter, and at worst I think you're looking at a rotation 3pt shooter.
Ingram, in my opinion, has the highest upside. At best, you're looking at Kevin Durant but with killer defense, i.e. a historically great player. At average I think you're seeing a Joe Johnson type player. But, the catch is, at worst I think he could be out of the league in a few years. If he doesn't put on muscle and improve his below-average basketball IQ, I think you'll see a James Jones type player that is not as valuable to his team.
Finally, Simmons. Everyone says that, at best, he will be the next LeBron. I'm here to tell you that is a load of horseshit. Simmons is an atrocious shooter who can make excellent, beautiful passes. The dilemma is his court vision is below-average for a player of his reputation. While he is incredibly, fast, strong, and athletic, at the same time, he gets easily distracted on defense. Have I mentioned how bad he is at shooting? It's abysmally bad. He simply does not make his teams significantly better. At best, you could end up with a Kawhi Leonard... Thing is I think the likelihood of that is by far the lowest of the four I'm about to give. More likely, but still a second best-case scenario, I think you are looking at a Rudy Gay-type player. I.E., an NBA starter that, in the right system, could actually be a very meaningful contributor. On average, my bet is Simmons becomes a Michael Kidd-Gilchrist type player. Or someone that does not contribute at all on offense but can be a solid defender who reads what teams are trying to do on both sides of the ball. At worst, and something I think is possible, you could be looking at Michael Beasley. Someone who has a lot of natural talent but never is able to put it to anything useful.
Just my read, though.