Savane is old. The interface looks straight from the early 2000s at
best, it is cluttered, the default color scheme scares users away.
Not to mention the fact that on the homepage, there are just few "news"
and some are as old as 2011, which make the site look poorly maintained,
and most of the
GNU Project offered an official Gitlab or Gogs instance,
I suggest asking gnu-advisory about the idea. If they and/or rms give
the green light, maybe people on gnu-prog-discuss would be willing to
volunteer to do the work involved. If you weren't volunteering to do so
yourself (wasn't
