I would be fine with something like that paying 15 bucks for an always changing game.
Just dont want to pay 60 bucks for a game that only good for one month then have to pay another 15 to slowly level up and stuff.
Id rather them give one free week or two. see if Im into the MMO then every month after. you pay a fee. 60 buck is like paying for 4 months already just to find out its not what your into.
I used to always rent games with gamefly on console, if i liked it i bought it. If not I returned it within that month and 15 bucks wasnt that big of a deal. Problem is you can really rent PC games. Sure you got demos but thats not really the whole scope of the game.