User blog comment:MisterWoodhouse/Creating new wikis on the Unified Community Platform/@comment-4177770-20200304071755/@comment-24006128-20200304143323

One thing at a time. We want to stem the flow of new overlaps before we consider how to best deal with other issues of overlaps.

The old wiki close option is for wikis which never really got off the ground and would be more work than they're worth to revitalize, not established large wikis with no activity.