Repeating Annotations and backwards compatibility

[Paul Benedict]

I just read the archives and find that "looking through" the grouping
annotation is awkward. However, I also agree with Joel that we "shouldn't
make the source-to-reflection gap bigger."

Was there any consideration given to NOT retrofitting annotations? That is,
just allow repeating annotations; those with historical grouping
annotations have to retain them to maintain the same reflection results.
Then no "looking through" magic needs to occur at the reflection level. I
think that's much more straight-forward than what's being proposed.

Paul