Hi-Rez Studios is the creator of Global Agenda, a MMO that will soon be in beta. I bring this up because recently one of their team members made a comment in their game forums saying they will combat RMT by not allowing trade between players at all. All commerce will be conducted through the auction house. I automatically thought it a bad idea but I'm unable to give a good enough reason why not to do it. It eliminates easy trading between your alts and your guild members but you should be able to manipulate the AH to do it anyway so it's not really that big of a deal. I then thought about it in terms of FFXI. It would eliminate the bazaar..but if they get rid of the AH item limit (which is idiotic anyway) and the high AH tax (which is way too high in Jeuno) that wouldn't much matter. You wouldn't be able to have an alt to carry all of your stuff...but if they implement a bank and larger baggage that wouldn't be a problem at all.
I then thought about the benefits in terms of WoW (and somewhat FFXI). No more trade channel! No more people shouting WTB x item or WTS y gear. It's possible that it might work to severely hinder RMT activities.
In the end I think the benefits outweigh the possible inconveniences it creates but I still don't like the idea. What do you guys think? Would it be a decent way to curb the RMT in FFXIV? Can you think of more reasons not to implement it?