sorry... i've been really busy and have been meaning to get back to you. I'll help, but it'll have to be after the new year most likely if you want a lot of thought put into it by me. And no, they aren't paint scorers. Don't think reality, think sim, and in the sim, they aren't paint presence players.
To do something like you're wanting, you need to give people high & low usage options at each position. Off the top of my head... Something like
pg - Muggsy / Magic
sg - Brent Barry / Paul Pierce
c - Mutombo / Shaq
etc
you get what I'm saying?
Also, you should avoid Lebron (years 08-09 & 09-10 especially), MJ (almost any year), Rodman (any year, especially any season prior to 93-94 as he's 100% at SF and very overpowered for the sim) or Wilt (66-67, 67-68 & 68-69 versions). They are the best at their positions and are overused. If any of them are an option the winning team will use that player in the rotation. There's no better alternative.