It does not say which extensions are in which category (that's #635, still to come); it simply establishes the categories.

I strongly urge you to accept the proposal. We have been using this language informally for years, and it's good to nail it down more precisely.

There is plenty of discussion on the PR, but it's all about the specifics (e.g. do we want both Deprecated and Legacy; answer, yes).  There seems to be a strong consensus around the principle.

I don't expect this to be controversial. Please (everyone) can you respond within a week, by end of day on Thursday 23 May.   Can you