This would be awesome.

Tracker Suggestion
In tracker its possible to push everything to Tracker, then to use the multi-project view and to drag Stories on Board stories into different projects. This is really a nice workflow *but* when the story moves projects, the Stories on Board link is broken. It would be wonderful if the link would reflect the correct project. Trackers just uses a simple url for stories in the following format where the story ID is the always unique, even if the project changes. Therefore, if I have the following story
https://www.pivotaltracker.com/n/projects/2231783/stories/164583925

Then I move it to another project, it will then have this url
https://www.pivotaltracker.com/n/projects/1241422/stories/164583925

For Github it would be amazing to be able to find something similar. One workaround that has been discussed but not tested is to create a separate 'umbrella' project and then use gitsubmodules. This isn't ideal. Maybe a blue activity card could be associated with a specific repo? That might work...

This would be extremely helpful as our projects span multiple GitHub repositories. Managing three storymaps for tightly coupled work creates a disconnect when trying to view the entire project because we are not able to assign multiple repositories to the issue tracker integration.

This would be awesome to have! We need to work with Github.

This would really help us. We use Github

this would be awesome specifically for trello which is lacking the high overview level...