As for Wesley, can we break down his actual issues?
Defense: He looks like a good defender, with the quickness and anticipation to stay in front of his man and quick-handed enough to be trouble. Help-wise is less clear, but he seems to be okay there, too. He's a bit undersize, so will probably have to cover point-of-attack guards and play PG. Might be able to do some SGs.
Playmaking: A bit incomplete, but shows promise. Positive AST/TO ratio, knows where his guys are supposed to be. Able vision kicking-out from drives.
Shooting: Small sample size, but he was a good spot-up shooter. His percentages weren't that great in college, but his shot selection was super erratic. If he can hit those spot-up threes, it's all a different story for him.
Major Issue: He gets the swatted out of him whenever he drives to the hoop. He has little vertical pop. He glides forward into tree limbs with nothing else to do. Lots of embarrassing swats. Even when he doesn't get swatted, his touch around the rim was terrible.
Now, this is only one issue. It's a very big one, and he probably has some small ones, but his swing issue is whether he can solve this problem. To me, his ceiling looks to be a role-player. I don't think we're seeing a star here, I don't know if we're seeing a long-time Spur, but this may be a guy who can stick in the league and do perfectly alright with his career. It all depends on upping his efficiency. And that depends in large part on what happens on his drives.
Because... silver lining... he gets to the rim to get swatted due to getting past his man so often. The blow-by is no issue. That's great. One analyst pointed out that he takes off the ground too early, meaning his momentum is taken in gliding - at low-level - to the rim and, of course, there's nowhere else to go once he's committed. If he takes another dribble and expends more energy actually going north, that can help. Or he can develop a floater. Or develop pull-up jumpers. The paint is already his: the problem is trying to yam it, which ain't gonna happen.
It's everything in between the three-point line and the rim that he needs to figure out. Slow down after that blow-by. Quickly assess the landscape. See the kick-outs, dump-downs, the floaters, or the stop-and-pops. His tendency is to ignite the jump and there's nothing he can do. If he extends his options, works on using the window, the angles, then he's much better.