Your right, guys with small roles do leave contenders to take on a bigger role on less successful teams. Not many star players leave a contender to go to a lesser team so it was hard for me to suggest an idea that would just effect the lower level players on contenders.
I'm confused by your last statement, are you saying only a bias person could like this idea? Going by that statement it could be bias for you to oppose the idea also.
"Bottom feeders" as you put it, already stock pile the super star draft picks. A lot of the Bottom Feeder teams actually have more talent than contenders on paper. There is no way in the world that there isn't a greater chance a player would test the market on a losing team compared to a winning one.