i think if the reason members of the cast are leaving is the fact that ABC can't afford to pay them as much as NBC did, then this is unacceptable.
Scrubs is so popular, ABC should be doing everything to save the show. JD, Cox, Elliot, Carla, Janitor, Turk, Kelso.
This is a fracnchise that cant stop. Its got too much potential left and it lies with the cast. Somebody at ABC must realise this. Save the cast, save the show. If they cant then they should give it to someone who can.