These shouldn't be suspended, and neither should their repositories. People might want to dig through the source code. It's okay if they add a warning on the repository, but suspending _everything_ is a stupid thing to do.
This can also be handled relatively easily. They can disable the old links and a new one can be added specifically for the disabled repository. Or even just let the repository be browsable through the interface at least.
Simply showing one giant page saying "This respository is disabled" is not helpful in any way.