I would seriously consider it actually. If the game managed to hold my interest for long enough and there was a decent community (and if the monthly fee wasn't too obscene) I'd probably take the plunge.
I rarely if ever post in this board but I'm from Japan and the only reason I'm lurking here is to see if you guys will have a monthly fee like we do over here.
I like to buy alot of old or used games and I'd rather use the money I'd be constantly pumping into one game to do that instead. So I s'pose if there's no monthly fee for the English version then I'll import it (lol that's sorta like a rubber band since it started here) since obviously I can understand/type English (I actually can't speak it for crap though... accent and all that...) but I'm not gonna constantly pay money just to play one game.
I know that's a common thing with MMOs and it covers server costs or whatever but the idea just always felt stupid to me sorta like if say for the PS4 you have to pay each month for updates or something cause the updates cost money to make.