Quite sincerely, they should just look into running WebKit server-side.
That said, in my experience if Apple has secretly decided they don't like you, they tend to move the goalposts on you in subsequent reviews, so migrating their systems to WebKit may not be time well spent.
That said, in my experience if Apple has secretly decided they don't like you, they tend to move the goalposts on you in subsequent reviews, so migrating their systems to WebKit may not be time well spent.