I would be very interested in a User Agents for members and not logged in users too.
Let’s Encrypt are making changes to signing as their current cross-signed root certificate is expiring in September 2022, and certificates they issue from January 2021 will use their own root unless special steps are taken.
Unfortunately from https://letsencrypt.org/2020/11/06/own-two-feet.html :
Some software that hasn’t been updated since 2016 (approximately when our root was accepted to many root programs) still doesn’t trust our [own] root certificate, ISRG Root X1. Most notably, this includes versions of Android prior to 7.1.1. That means those older versions of Android will no longer trust certificates issued by Let’s Encrypt.
…
Currently, 66.2% of Android devices are running version 7.1 or above. The remaining 33.8% of Android devices will eventually start getting certificate errors when users visit sites that have a Let’s Encrypt certificate.
Therefore it would be super nice to have a dashboard report on user agents for non-web crawlers for purposes such as worrying about the above!