[DannyBee]

Right, but they pay a different cost there that isn't listed: "It's not entirely compatible with the existing language"

private and multiple inheritance do not work, for example (yes, i know some of this is fixable, but some is not)

  public __gc class one { int i; };
  public __gc class two: private one { int h; i = h; }; //error

  __gc class a {};
  __gc class b {};
  __gc class c: public a, public b {}; //will produce an error

etc