I think it would be extremely useful to have a unique chat mode that is exclusive to players who are currently Looking for Party. The chat could default to this mode when a player flags up and allow players to communicate (there should be separate channels so that players are grouped within level ranges) with everyone else who is looking for a group, regardless of zone. I'm thinking it would be best if this was separated into 10 level ranges, i.e. 10-19 chat, 20-29 chat, etc.
It would be like an array of pseudo-linkshells, and when you flag up you would automatically join the appropriate one. Not with a list players or anything, its only function would be for communication. Maybe the text could be a dull purple or something, so that it conveys a sense of 'background' communication while being distinct.
I think this would help a lot with people who are trying to join/create conventional parties. If you don't like seeing this chat channel when you flag up, you could have the option to turn it off- but it should default to on. Also, these channels should only be joined when a player chooses the green Experience Points flag after LFP.
Any thoughts on this? I'm sure there's a lot to be played around with concerning this idea, but the main point is to have an automatic, simple, and non-obstructive chat mode that provides a way (or maybe even an excuse) to communicate with the people in your level range who are seeking a party. It's essentially just starting the conversation in order to get people grouped together more quickly and readily; sort of a nudge.