I am guessing that 2.0 won't have an auction house. I have been following along with the updates about this new version of FFXIV but i haven't come across anything about how this new system, if any will work. Correct me if I am wrong, (and i hope that i am wrong) there will be something similar to what we have now.

From what i can see, this area of commerce is full of lag. It doesn't seem like a very efficient way to broker merchandise, regardless of the price history tweaks SE can add. It will be a step back developmentally from the old team who made this game that was kept for no apparent reason.

It can be said about the Auction House that "It's been done," by tons of other MMOs and is unoriginal. In my opinion you see it in other games because it works, it's efficient, and more than likely easy to implement (free games have them, its not like you need a programming genius to set up an Auction House).

Pros and Cons-wise, i just can't say there is anything good about having laggy market wards, but I'm sure there are some bias individuals out there who can make up reasons why its tolerable.

My suggestion:
implement an Auction House, like this post if you think its a better option then another Market Ward.