Alavastre - thank you for a well thought out reply. I hope the way you say the game is funded does have a positive impact in regard to retaining it's subscription format.
My thoughts are about unique "hooks" that are going to keep players here. Having a solid, well supported game may be enough, although it hasn't been for other games. I guess it may just be down to the formula of frequent content updates and catering to as broad a player base as possible.