I have had the same thought, and a small part of me would actually like to pay a subscription fee. As of now I do want to support the game, but there is next to nothing in the shop that I want.
With that said, I would like to pay a subscription if all the microtransactions would be gone. 10$ a month for free waypoint, wardrobe changes, gathering, access to content and so on would be a very fine trade in my book. I know some of these things can be acquired through the shop, but I just want these things to be there, contrary to them being a limited ressource that I have to renew now and then.
This seems cool. I liked GW1s replayable missions, especially because of the optional bonuspart. I hope they add something like that to the LS2-content.
Certain people will complain on anything Anet do. Even content that is offered for free for a start and charged for later on if you still want it (gasp! They have to make money? What kind of company is that?). Just add troll filter and you are good to go.