As someone who plays GW2 I'm actually in favour of this. While GW2 gave MF, EXP ((har har har)) +% bonuses ((which was terribly easy to come by and honestly pathetically low)), they also gave a choice of relatively exclusive weapon skins if people had more points.

If the points were to provide nothing more than vanity I'd say sure. Yes, there will be idiots who burn themselves out trying to get all the achievement points because uh... e-peen increment and vanity rewards are worth burning out for... I guess? Yes, there are rewards for unlocking achievements, but saying that you don't want any rewards is like saying that you don't want free gil.

... No really, you don't want free gil? (o_o)/