Other Proposed Solutions:

Lastly I wanted to talk about why I'm not a fan of some of the more common proposals from the community.
  1. Implement cross-DC party finder & duty finder.
    Unfortunately there seem to be some big technical hurdles that need to be tackled first
    Quote Originally Posted by Famitsu
    Would it be possible for you to consider [...] a content finder registration system that transcends regions?
    Quote Originally Posted by Yoshi'P
    a matching system across all regions and a content finder registration system are also being considered for implementation. However, the super server engineer on the development team and I have had many meetings, and at the end of each meeting, I find myself saying, “U～～～～～～～～, let's talk about it again at the next meeting” (smiles). (wry laugh). It is very difficult in terms of both technical and infrastructure, but I think it is a good thing that the “FFXIV” team never gives up on a challenge, so I would like to continue to think of ways to make it work without giving up.
    Since CS3 are attempting other solutions I doubt they're still considering this. But any time Yoshi'P gives an answer like "it would be very difficult" I'm inclined to believe that the chances of it happening are very slim. Obviously I wouldn't be opposed to cross-DC grouping if it were to happen but latency would still be an issue for east coast players.
  2. Remove data center travel.
    We can't go back after pandora's box has been opened. Many players have made friends and joined communities/statics across data centers. Most would not be happy to have that suddenly taken away from them.
  3. Restrict access to party finder, duty finder, and other content when traveling.
    This is almost as bad as removing data center travel. What good is being able to meet friends on other servers if you can't do anything together? You might as well find a different game to play together at that point.
  4. Reduce rewards when playing on other data centers.
    Data center travel was implemented so we could game together. It would be awful if every time you played with your friend you had a nagging feeling in the back of your mind about the rewards you're missing out on. This would also break up a lot of statics if it meant reduced gear.

If you have any other ideas please feel free to share them. The more we talk about it the more likely SE will try a proper solution instead of this god awful congestion based system.