Posting on behalf of a customer:
In Audience and Account Explorer, you can see the number of visits per account and per user.
As a user, I would like the ability to filter any report or widget by the number of visits. For example, I may not want to target a user who has only been to the product once. Right now, I can sort Audience and Account Explorer by visits, but I cannot filter.
There is another similar request that is focused specifically on Retention Analysis.