So i like the ideas here in general because I do believe that such specialization helps the economy. However, one of the driving forces behind my decision to play FF over other MMO is the fact that I only need character, and I can do everything. I was extremely disappointed in 11 when I learned that I would not be able to master all crafts. I very much wanted to wear a full set of HQ gear, made by me, signed by me. I take pride in being able to do things like for myself.

Really, it comes down to this: Why should we limit content to anyone? More content is more to do (even if it is more of the same).

Should it be easy? Nah. I'd be totally happy with hard to acquire books, quests needed to learn a recipe before you can make it, or any other number means by which you can limit the ease of mastering everything. However, it should not be impossible to do it. I -want- to do it all.

Should we also make it so that you can only master one DoW? or one DoM?

I think instead we should look at emulating DoW/DoM in some ways, perhaps by making some of the abilities for DoH class-specific. How about a Preserve 2 that can only be used in-class? Or a new ability that lets you get a better chance on output quantity on materials - but is only useable by Arm/Bsm (say to allow mass production of nuggets and/or ingots at the expense of being able to output HQ).

I guess what I am getting at is that the theory is nice, however it ruins, for me at least, part of the fun of the game, and there are lots of other ways to encourage specialization without ruining the core ability to play anything and everything.