1. We consider stopping an environment https://gitlab.com/gitlab-org/gitlab-ce/issues/25388 a new feature, not a bug.
2. Relative submodule links are planned for 11.3 https://gitlab.com/gitlab-org/gitlab-ce/issues/37356
3. Not showing a retry option to logged out users https://gitlab.com/gitlab-org/gitlab-ce/issues/19846 is a good improvement but since very few logged out users will see this message we don't consider it a bug.
4. Showing the original project next to the runner IDs makes a lot of sense. As you can see in the issue we are no longer closing feature proposals due to inactivity.
If you find ways of dealing with above things on your own that involve modifying GitLab please consider contributing them back.