rotate the roster

When you have to get rid of some of your old hoes and bring some new ones in

Yo bro what happened to Alexa?
I had to rotate the roster man

Top of the roster stuff

Anyone who does what they want due to reaching the top of any given roster.
One who doesn't care about consequences due to obtaining top status of a roster

That guy does what he wants when he wants, thats that top of the roster stuff I'm talking about.

Wheres he at? I don't know, he's at the top of the roster, he does what he wants