Having too many people that NEED shots is a huge problem, for any team (as opposed to being capable of hitting them). I would call it a subtlety, but its not subtle.
Teams can have too many "skilled" players as well, at least as skill is normally defined. The one ball principle should dominate team construction. The fact it never has for us is a prime explanation for our franchise long futility. The "skills" that translate and are universally useful are spot shooting, and to a lesser degree passing. This is why these are the skills possessed by offensive roleplayers. Check out the top teams and their ratio of "skilled" players to "unskilled" players. They never have teams full of "skilled" players, because skilled players as commonly defined are skilled WITH the ball and the #1 most important and most forgotten, rule in basketball is that there is only one ball. "Unskilled" players are universally useful, at all times. These players are the defenders, rebounders, hustle players -- you can never have too many (I suppose unless you have a team of nothing but), and their effectiveness or usefulness is never hindered by the guys around them. "Skilled" players on the other hand get dramatically more or less useful according to how many you have stuffed on the floor at once. Have one? Most important guy on the team. Have 5? They are normally tripping over each other and adding little, and two of them are basically playing the same role an "unskilled" player would play, except they are not as good at it. The "skilled" player who is willing to take a backseat, play defense, pass, take shots only when there is no other option etc. is so rare as to almost be a unicorn. Because we had the incredible good luck to once find two of them at once (Vlade and Christie) I think Sacramento fans have been chasing those unicorns ever since. And the thing is, those guys are almost always older players to boot. Asking sub-25 players to play is futile. They have names to be made, money to be put in the bank.
Our team right now rather remarkably has SEVEN players (Cousins, Reke, Thornton, Brooks, Isaiah, Salmons, Robinson) who by dint of their recent careers might hope to score 15ppg. And the only reason Jimmer wouldn't be an 8th is because he's not good enough. We balance that with 4-5 (if Honeycutt counts) guys who you could call roleplayers (JT, JJ, Garcia, Hayes, Outlaw, Honeycutt) only two of whom are guaranteed to be in the rotation. Compare that ratio to the top teams last year:
Kings 7 (Cousins, Reke, Thornton, Brooks, Isaiah, Salmons, Robinson) + Jimmer to 5 (JT, JJ, Garcia, Hayes, Outlaw) + Honeycutt
Thunder 3 (Durant, Westbrook, Harden) to 9 (Ibaka, Fisher, Cook, Perkins, Mohammed, Sefalosha, Collison, Maynor, Jackson) + Ivey
Heat 3 (James, Wade, Bosh) to 7+ (Chalmers, Cole, Miller (one of those unicorn skilled unselfish guys) Haslem, Battier, Jones, Anthony) + Pittman, Harris, Howard
Spurs 4 (Parker, Duncan, Ginobili, Jefferson/Jackson) to 7 (Neal, Blair, Splitter, Green, Diaw (one of those unicorn skilled unselfish guys), Leonard, Bonner) + Anderson
Celtics 3-4 (Pierce, Garnett, Allen) + Rondo? to 9 or so (Bradley, Pietrus, Wilcox, O'Neal, Stiesma, Dooling, Daniels, Hollins, Pavlovic) + others
Bulls 3-4 (Rose, Deng, Boozer) + Hamilton (in his delusion) to 7 (Noah, Watson, Korver, Gibson, Lucas, Brewer, Asik)
P.S. there is a reason I have been not against the idea of getting Diaw or Miller in recent years)
Our mix is all screwed up. There is no chance with Brooks to be anything but Brooks. So in order to get yourself into a reasonable structure you have to "hope" Jimmer washes out, tell Salmons to go stuff it, shut up, sit down, and shoot when told and never else, assume that TRob's summer futility is permanent, has humbled him, and that now the #5 pick who last month was barking about how he should have gone #1 over Davis is abruptly willing to just rebound and defend as a roleplayer, and tell IT to slow it down, quit shooting, and do nothing but make everybody else happy. In his contract year. That would be a huge task for Pop, who notably never puts himself in this situation. Asking Smart to pull it off...