It's difficult to get a sense of how that will play out.
What you've described was largely the case up until 2011. Since then, our vacancies have generally come from retiring players (Maxwell, Ball, Jolly, Didak, Krak, Clarke, Lynch, etc).
So our list turnover (ignoring trades) effectively looks like this ...
Out: Maxwell, In: Moore
Out: Ball, In: Maynard
Out: Lynch, In: Goodyear
... So by the time we get to a player like Ramsay or Oxley, he'll be replaced by an 18 year old late draft pick ... May as well hang onto what we have.
It'll be interesting to see our list management strategy end of 2015. With very few natural retirements coming up, will out strategy be to have a low list turnover? Or will Buckley cut deeply into the non-performing youngsters?
Is it the next draft that we have been earmarking for a while as deep and strong? If so, we may cut deeper to free up space or even try to trade into upper round selections.