I know what was meant. Everyone can get to level 50 crafting classes, and can make the 1 star and 2 star stuff .. but new 3 star and 4 star stuff would be restricted, in that you had to pick one specialty and could only make the 3 and 4 star stuff from that specialty. Or, if they are not going that route, when they raise the level cap from 50 to whatever, you could only take one crafting class higher than 50. That sort of thing.

And no, that sort of thing is neither necessary, nor beneficial.