In legacy/trac#32213, I regenerated the practracker file, and then manually committed the over-broad exceptions. It would be helpful if we had a `--regen-overbroad` option to practracker, that automatically regenerated the improvements we have made. I feel like this should be easy, it's a combination of `--regen` and `--list-overbroad`. But I don't know the practracker design well enough to do it cleanly.