Agreed. Right now joining a party in progress is a huge risk. I think that incentives should be given so people will use that option more often. Maybe have the option on by default, or remove it altogether. WoW's dungeon finder gives bags of goodies for people who queue at random. FFXIV could give EXP bonuses, foodstuffs, extra personal chests or something. I bet a lot more people would start queueing for them this way.

Some sort of kicking system should be implemented too. People who AFK in the middle of a dungeon are horrible.