We have started to implement Custom Events for our site deploys in test much as we originally intended to do with this function. It works well in tests, good job on that function! Will hope to extend that
What we found is that on the admin side where we define the target for the custom events we lack a middle way between single events and all events. We would like to be able to target a whole monitor group and perhaps even a subgroup of checks. This would help out a lot to handle admin side of it as the groups are fewer and change very seldom.