Regularly review them. Understand them. Know what them being green really means.
Has a check been superseded by any? Is that area of the system still heavily used?
If it failed, would anyone care?
Would it become a bug that goes into backlog Antarctica?
Do you know what the initial risk was?
Is that risk now mitigated by monitoring/observability?
How strong is that codified oracle? Could it be improved?
How often are you doing that?
How are you keeping yourself upto date with system behaviour? When was the last time you did some testing?
A important distinction here is that you rarely 'fix' automated checks. What happens is you use alot of the existing
Time in the forest got my brain racing!