At the moment, if you want to receive commit notification emails about changes to components of the ET, you have to subscribe to a number of separate mailing lists. There is a "commits" mailing list for the ET, but this currently only includes notifications for components which are not announced on other lists.
I propose that subscribing to the ET "commits" mailing list should be enough to receive commit notifications for all components in the toolkit, so that only one subscription is needed. This will also simplify mail filtering on the receiving end.
Note that the individual components could continue to manage their own mailing lists if needed, but a copy of the commit notification would be sent to the ET commits list.
The components with separate lists that I currently know about are:
Probably the easiest way to implement this would be to modify the VC commit hooks to send the notification to the ET commits list in addition to wherever it is currently being sent. The commits list may have to be configured to accept email from these additional addresses.