User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-45030543-20201103001226/@comment-1807002-20201103003042

1. - 2. I am hoping they re-add this.

3. Sadly because they implemented UCP as a live beta they are going to lose more people instead of implementing after bugs fix and customizations were complete. But I think they would have ran into people leaving in any choice they made (never upgrading, upgrading as a live beta or upgrading as complete).