I think the in-game clan system or lack there of doesn't help people who may not know their clan mates very well form up groups. My suggestion would be some kind of a sign up sheet on the roster page that people can sign up for certain raids at certain times etc.
or even put a few tags by our names that we are looking for a group for 'whatever activity' so others in our clan can form a group etc.
anyway the point is i really wanna get some ideas flowing and get a feel for how many of us are not happy with the lack of a clan system.
Even something as a list of clan members who are online with a LFG tag for ...farming group....raid group....etc. would be really helpful
Being able to chat to those around you with out being in there fire team would be very beneficial. Also like the op said but minior tweaks. Have a option to display your looking for a party to do such an event or events. Look at ff14 party finder. That would fit perfect into this scenario