Thanks for mentioning Screenful. Just wanted to comment on your remark:
"In general I'd like to be able to just point a tool at N "completed" GitHub projects, and a fresh one - and get a forecast that adjusts as issues are completed and added (possibly filtering on issue tags in completed and new project)"
That's exactly how our Forecasting chart works. You can import any number of repositories and projects (classic or new) and get a forecast for the remaining work. You can learn more about that chart from this guide: https://screenful.com/how-to/how-to-read-the-forecasting-cha...
Thank you for that link, you sum up the idea that sometimes counting total tasks works fine quite well:
> Will this work if my tasks aren’t all the same size?
> The short answer is yes, your work items don’t have to be the same size for this approach to work. The chances are that If you take 100 tasks in the past and compare those to a sample of 100 tasks in your current backlog, they will be the same size on average. Also, they are likely to be the same size on average regardless of how you measure (e.g. in story points or by some other estimate) or simply by task count.
I'm not really sure that there is anything I might do on Product Hunt that would improve Screenful's odds of success. However, if it meets the guidelines, this might make a good 'Show HN'. Show HN guidelines: https://news.ycombinator.com/showhn.html
On the other hand, 'Show HN' is more about getting feedback than Product Hunt. Good luck.
I like the fact that you're trying to unify the whole app dev lifecycle. But what about requirements management, don't you consider that as an essential part? Also 99% uptime is not really a 'rock solid' I hope you can improve that along the way.
"In general I'd like to be able to just point a tool at N "completed" GitHub projects, and a fresh one - and get a forecast that adjusts as issues are completed and added (possibly filtering on issue tags in completed and new project)"
That's exactly how our Forecasting chart works. You can import any number of repositories and projects (classic or new) and get a forecast for the remaining work. You can learn more about that chart from this guide: https://screenful.com/how-to/how-to-read-the-forecasting-cha...