And this is done!
Most of the reports are live on all up to date Discourse instances, they were merged in December last year.
The rest I mentioned we could do are now possible via webhooks and Automation scripts that fire or are triggered on TL change.
The webhook makes it easier and helps with the TL and Submarine triggers you spoke of. Joffrey spoke to this on another topic:
And with the Automation plugin, this and other triggers can be taken even further. And also it is now live on our hosting plans and ready for anyone to use 