No subscription fee, please. One of the biggest selling points for Guild Wars 2 is that you can pick up and play whenever it suits you, without having to fish out your wallet. I wouldn't be against more purchaseable items within the Gem Store (I occasionally like to buy gems, both to support the game and also for my own convenience), but I would prefer for them to continue being focused on cosmetics/convenience rather than anything that provides a distinct advantage above those who don't buy gems (or have the gold to convert to gems). At the end of the day, Guild Wars 2 is an MMO, and I feel it should try to avoid going down the route of mobage/mobile games which seek any available opportunity to part you from your hard-earned cash (particularly for upgrades and things that will elevate you above other, non-paying players).