I only caught the last 1/2 last night, but thought it was a HONEST documentary, not a pity party for Rod.
I really respect Rod Roddenberry for making it, and thought it had some good insight on the Trek Phenomenon.
Interesting thought on the documentary feeling too short.
Could Trek Nation work as a limited series on SyFy? Like 13 weeks of 1/2 hour or 1 hour episodes, focusing on various issues, and of course lots of scenes that are repeated. Perhaps even some fan videos as well.
The cost would be minimal, but get enough ratings to make it worth it.