Awesome. I've enjoyed some of the long term match-ups, including against our current opposition, but it gets a bit disheartening when you realise that there's no way to change tiers without having a server implode and be cannibalised by its opponents.
SoS clearly has the smallest NA crew out of the top 15 or so servers. We have a lot of pride in how close we keep the score during our "shift."
You should, our NA crew do an excellent job in keeping us in the match. If we had similar coverage in our SEA timezone while we were dropping through tier 2/3 to blunt our losses after the Oceanics logged off, we'd still be there.
after I start it, can I complete it even after the 12th of May or it will stop no matter at what stage I am?
The 12th will be the end, regardless of where you're up to. That said, the content is reasonably easy, and there is a certain amount of synergy now, as alot of the different quests/actives are occurring in the same location, so you can progress multiple quests concurrently.