Great that you're building as well, we think it's a really interesting space.
We don't have a maintenance-specific dashboard. We do maintenance at execution time, so the dashboard paradigm doesn't apply as well. Instead of proactively checking for site changes, we check at execution time and repair integrations on-the-fly, when necessary.
I would still be interested to see metrics around the process. Overall throughput, what's the error rate, how many errors get turned into fixes, are certain types of websites less stable?
My self healing project is very experimental, so tracking and displaying these kinds of metrics are important to judging the success of the experiment.