I'll see if I can help you bud.
I'm not sitting in front of the game right now but I can make some suggestions for you and you can see what you'll need to get it done.
PG - Flynn with Ridnour backing him up is good enough
SG - Brewer (if you play him at SG and not SF that is) Wayne Ellington -
I'm not particularly sold on either of those guys. Everyone just keeps waiting for both of them to develop but I really don't think it's ever going to happen. I would package one or both of them plus a second rounder and grab someone that's more consistent. Brewer has solid athleticism and if you really like him keep him, but at least trade Ellington for a better starting or equal backup (equal to Brewer I mean).
SF - Lazar Hayward, Martell Webster, Wes Johnson - They're all decent players, I'm not sure what Lazars potential is but he's probably worth developing, I'm looking at some of his ratings online right now and it appears as though he's a decent shooter right out of the box. Personally this is a position I would upgrade. If you get rid of Ellington you can have Webster and Brewer at the SG. Have Lazar and Wes getting a lot of playing time and subsequent development at the Small Forward spot. Or if you're not really into developing players and want to win now. Then you can get rid of Hayward and package a 1st rounder for a guy like Iguadola or Danny Granger, an "almost" franchise player of that caliber. Would probably cost you a 1st round pick, ellington, and hayward. Plug that into the trade finder and see what you get.
PF - Michael Beasley, Kevin Love - Both of these guys are a real treat to play with, Love is incredibly underrated, can hit from the low post all the way out to the 3 point line (and he's an incredibly accurate 3 point shooter at that). And is one of the best rebounders in the game. Beasley has a big ceiling and could develop into something really special. So I don't think you need to do anything here. You can also experiment with Love at the C and Beasley at the PF spot if you need some offense the combo of both down low should really help you.
C - Darko, Kosta Kofous, Nikola Pekovic, - This position really needs an upgrade, Al Jefferson was not the best defender, but he was much better than these three. Pekovic is an interesting prospect and some friends have told me he's fun to play with and became a solid starting C in their franchises. I would say while he develops though go after a true starting center or a guy like Roy Hibbert, Andray Blache, (he can play the C very well though he's listed as a PF). Javale McGee, Greg Oden, or any other type of player that's not a superstar, but a solid starter. Out of that small list, based on experience with 2k11, Hibbert and Blache are both really, really good. Blatche is a bit better offensively, but Hibbert grabs offensive boards like crazy and gets easy putbacks, not to mention blocks everything as well.
So there, I hope that helps you out in your franchise. If not, it was fun to write.