Security updates take too long. How bout each copy of MacOS keeps local copy of revocation database, and updates in background?

Much faster, updates relatively quickly, and not subject to network outages.

I'd imagine that revocations don't happen often. And when they do, Apple has a perfectly capable infrastructure to push those small incremental changes on demand. It's almost as if they intentionally ignored such superior solution and chose calling home for other reasons...

That way (current) Apple also has the app usage statistic ?