I'll agree with that. Guild Wars 2 still has a slight amount of "pay for convenience" stuff that makes me twinge considering how much I've already paid for the games and expansions, and I really wish you could unlock mount skins in more ways than just gems, but considering you can farm gold and swap it for gems it's acceptable enough.
Especially because I wouldn't even play an MMO with a sub fee, so for that alone I respect GW2's approach.