Rudder

One thing that is sometimes really annoying is that in the nodes list, you'll see "Last seen: Never" for nodes that have gone MIA.
I understand this is due to all their reports having been expired.
It would still be a lot, lot, lot better if Rudder let you discern nodes that never sent a report and ones that didn't send one for the last N days.

IMO the last seen date should not be dropped from the database at all.

For better understanding, the difference is in what happens for those states:
A node that didn't send a report in a month is probably off, quick check and delete.
A node that didn't EVER send a report is one that needs investigation and fixing.

It's risky to have those two overlap.
Beside that, it is worrysome when a gui tool reports something that is WRONG.
It can break the trust between user and tool. That is a problem better to avoid.