Purge Device/Hub/Location events

For the Xiaomi / Aqara device drivers I maintain, I'll gladly remove isStateChange: true from all events sent, but this won't reduce the number of events seen for the custom time/date stamp attributes that the device drivers make available to users who want to see the time/date of the most recent XXX event in their Hubitat Dashboard.

So, I'd still like to know if there's a way for users to display just the date/time of the most recent occurrence of a posted event in a Hubitat Dashboard. If that functionality already exists, then I could get rid of all of the custom time/date stamp attributes I added to the device drivers just for that purpose.

If that functionality isn't available in the Dashboard, then I'll gladly start a new thread in the Requests section to ask for it, as it seems to be something a lot of users want.