Small enough that you don't have the bargaining power of a CMG.
Look at what happened at Summa with SEA. Look at what has happened at any number of other shops.
Sure, you can have your docs be on committees, and be active, and never have an issue with staffing. At the end of the day, only the small hospitals care. Any hospital system will always fall for the "we can cover all of your sites" spiel, even with expansion. Your SDG won't. If you aren't taking money from the hospital, the CMG will come in and offer to pay for the privilege of staffing. They're in it to make money. Period.