GitHub needs to solve the problem when one owner suddenly becomes inactive. Yes, you can fork things, but it would be so much easier if just new maintainers could continue as-is.

Naturally some problems must be solved for this to work, but I now have a few examples of projects that kind of died when the old maintainer (solo guy) became inactive. For instance the guys at BG2 at spellhold-studio solved this via a fork (from spellholdstudio to spellhold-studio). But it would have been so much easier to just let them continue as-is. This is one example of many more that could be given here.