Planning on having cron job updates for Mozilla packages

[lunacd]

Those packages can be a lot to maintain and they often lag behind releases a lot, especially Thunderbird. If I want to have a cron job to automatically update those, do I have to first talk to anybody about it, e.g. package owners (do we have something similar here)?

Also, for Firefox.Nightly, is it worth having? Even with an automatic run, the whole PR process will inevitably make it lag behind, which I guess defeats the purpose of having nightly. Should I:

1. Leave it as is, or
2. PR to remove it, or
3. Try to update it in my automatic run, and accept that it would always lag a bit behind?