Actually during
an interview that MMORPG had with Colin Johanson he told the interviewer that "Whichever one gets voted in, the other will very likely never be added to the game. Not only will this content be permanently added and chosen by us, but we’ll also be deciding which one is banished to the potential ether."
Makes sense, there are plenty of other stories and mysteries to find out if one of these aren't picked. That is why I'm going for Kiel. I don't want to go backwards in lore, I want to go forwards and the reactor explosion is something that is relevant to GW2.