Ok well I found the coach billy g thread.
http://whatifsports.com/forums/Posts.aspx?TopicID=450453&Page=1
Look at the first page and the long 2nd post from billyg. If you don't want to read it he says "you can have 4 super stars, add a 5th, and not see any measurable benefit (ive been there, for sure). really, with triangle, once you get past 3, and maybe a 4th taking like a 5 ppg amount of shots, you are as efficient as you need to be".
(BTW this thread has some VERY useful info, I reccomend it to anyone and everyone.)