The project page listing all the repositories has all that empty space. Why not make it a table that shows some high level status. Things like

• Build status of default branch (maybe an indicator if the default branch is not master and mouse-over to display the default branch name)
• Number of open PRs
• Commits pushed in last (day/week/month, configurable, sortable)

Each table cell could be linked to the relevant page within the repository for fast access.