When implementing an interface, the "Implement Interface" context menu does not insert the associated XML documentation.

It should, since that XML documentation is usually a good starting point. Consider perhaps adding a TODO tag.

The same should apply to abstract class implementation.

The alternative, copying the contents of the Code Definition window into your code, saves a lot of (re)typing. Unfortunately, the documentation does not include the XML documentation tags, which must be added by hand.

An example from the code def. window:

// Summary: <-- should be <summary>
// Performs application-defined tasks associated with freeing,
// releasing, or resetting unmanaged resources.
// <-- missing </summary>.
void Dispose();

It also looks like the documentation is not complete - is the exception documentation missing??