Thanks Brian for your thoughts.
Only commenting on one small part:
<quote name="Brian Gerstle" date="2015-10-07" time="11:10:03 -0400">
*Pros*
- FLOSS
...ish. Not really. "Open Core".
See: https://en.wikipedia.org/wiki/GitLab#History
A view on why Open Core isn't healthy for FLOSS communities: http://ebb.org/bkuhn/blog/2009/10/16/open-core-shareware.html
Greg