On a side note, I just realized Antoine Walker is on the 05-06 Heat. Just wanted to let everyone know in case you want to use him on your rosters as I had been over looking him.
Yeh I created several of my own characters to create the platoons. You can edit their "tendencies" to make their play styles look pretty darn close to the real thing too. My Aaron Harrison will almost always take that long 3 from left center, especially in the 4th quarter. That kind of stuff...
There are several different ways that you can do it. I just use the roster editor and normal games to test out my line ups and then once I've decided what team I want I'll start a myleague and then move one of the teams to Kentucky and rename them.