I'm still interested, I've just been waiting for the update. Would've posted a vote count but I haven't been on SV the last two days or so.
I think we have three issues:
1) We only have like 5 or 6 players. We usually only have 2 plans each turn and my plans have won literally every time. (Excepting race choice because I wasn't playing then.) The solution would be to advertise the quest some and solve the second problem. As far as plan variety goes we'll probably get more variety once we're out of survival mode, right now most plans have differed only in methods, not goals.
2) One update every two weeks is... not very much. Keeping discussion going that long is difficult, even for extremely large quests with 50-100+ players. One update every week is manageable, one every two weeks runs the risk of players simply losing interest/forgetting the quest.
3) We've become stuck in the "prologue", right now the quest has limited appeal due to not yet being very far along. It's sort of like the CIV games, in the early game your turns will be fairly quick and routine and in the mid/late-game the time and thought required for reach turn increases. The issue here is that we're spending a week or two on actions that only take a few days, at most, to plan.
EDIT: Have you considered a multi turn like the Atlantis Rising quest did after the second relocation? A tri-turn should allow us to get our infrastructure set up enough to get started on extrasolar exploration.
Even if you don't have plans you can still post your ideas for discussion, I always consider incorporating new ideas in my plans and hopefully other planners will do the same.