MediaGoblin was the hope. It sounds like it might not have lost its developers if it hadn't gotten massively sidetracked by all the social networking federation stuff that was honestly always completely off brand for something that isn't a Twitter clone. You can't do anything about that now, of course, but putting it in a more accessible forge than Savannah might be a good start.

Well, go ahead:

git clone https://git.savannah.gnu.org/git/mediagoblin.git

Put it on github and see how everything starts to get better.