I can't help but think of how difficult it's going to be building around the three youngsters moving forward.
I don't think it's any more difficult to build around them than any of the other young teams currently.
As for none of them being All-Stars, I think Russell and Randle most certainly can be legitimate perennial All-Stars in the future. It's slightly more difficult now due to the way voting is set up, but nonetheless All-Star Caliber.
Russell is 12/4/3. His per 36 numbers as a teen are only replicated by him & LeBron. When you extrapolate it out to 20 years old you get LeBron, CP3, Magic, Lamar Odom. His shooting has improved as the season goes on. Has great court vision. One of the better PG rebounders in the league already. There's more turnovers from him coming from guys not expecting a pass, or can't get their hands on a pass that should be caught than there is from bad passes, lapse of judgement, and rookie mistakes. His on-ball defense is really good. He also has good measurables that make it even easier on defense. Also plays for a coach who is screwing around with him every day, does not try to put him in more pick & rolls. Despite it being smart offense for a guy like him. Also, Byron is content letting the ball stick to everybody for a lot of the shot clock as opposed to moving the ball around.
Where Russell needs improvement is getting to the hoop. P&R will help that. Also when he does get in P&R, he is often afraid to attack, that comes with feel for the game, and being able to read when to pull up on a shot, when to float it, and when to slow play it keeping the defender on your hip to draw more fouls. Knowing when to attack is going to come with getting the feel as a scorer. He has the feel as a passer, because that's what he is. When he gets comfortable, and isn't worrying about simple mistakes getting him pulled from the game, he'll figure out when to attack more. The not worrying about getting pulled has been improving as the season goes on. When he learns when to attack, he'll get to the line slightly more. His off-ball defense is pretty bad, but when you look across the spectrum of the team, there's a lot of mush going on in terms of defense. He falls asleep off the ball, and that has to be corrected in practice. The amount of **** we get on defense, Byron has part of the blame here. Scheme defenses are a coach's doing. And if guys are falling asleep off the ball, trouble switching. That's on the coach to correct bad habits. When a guy is on-ball and gets flat out beat, that's the player. Why I think we need Thibs as our next coach is to correct these bad habits they have.
Randle is one of the best rebounders in the league already. Plays average on ball. Can keep guys from getting straight to the paint, and forcing longer shots. Traditional 4s can't back him down. Speed 4s who can shoot are a trouble for him. Off-ball he's really bad. And he lacks defensive fundamentals, relies strictly on his strength and surprising speed/agility for a 6'9" guy to get ahead. Again, Thibs is a guy who will help him.
Randle's biggest deficiencies offensively are inability to shoot the mid-range / long 2s. And his lack of a right hand around the hoop. Also trouble dealing with length. Setting good screens and rolling off the screen. As most of Basketball Twitter has already addressed what is wrong with Randle can be taught. And it doesn't all have to be fixed in 1 year. First thing he has to do, is the shot in the offseason. The shot will force bigger 4s to play up on him, where he can use his speed/athleticism to blow past. And will give him easy points when a guy sags off. He doesn't have to be Tim Duncan or KG from midrange. He just has to be average to just slight above average from there. That's enough to keep the defender honest, and take the easy points when they give it to him. After that fixing the inability to use the Right Hand will be the last piece that turns him from a capable 15 ppg guy to a capable 20ppg guy. Again, it would be wonderful if he became great at using the right, but all he needs is to able to use it on occasion.
Byron moving him to the bench was just a nonsense move, and since then he's looked like crap. But doesn't negate there has been enough games of him as a starter, where he looks like he has something.
There's plenty to see for them to improve, but there's also a lot more to see that shows they can be really good to great players. Gotta remember they are only 60 games in the NBA combined between the two.