There were several such threads posted about in various areas at one point. I made the suggestion of either changing the unlock process to include more world bosses as options so maybe you could get away with 3 world bosses and 2 dungeons, since world bosses were always easier to group for. The other option was to change the loot tables in the dungeons so that people would WANT to do dungeons - more people would be down for doing them if there was something worthwhile in them right? As of the last time I played, there was really no reason to do the dungeons other than unlocking so once you were unlocked there was really no reason to ever touch them again - which is a shame since they are there and the time was spent getting them there.
Yeah there will be the people that say 'back in my day I waited six months to unlock - why should it be easier now?' that mindset is not server growth oriented. This is a dead game brought back to life and the majority of its fans are now wizened folks with families. For the person that has an hour or two to login between wife\kid\life aggro and then spends that time sitting in chat looking for group...well, not much reason to hang around when there are other swg options out there that are more casual-friendly.
Personally, I loved everything else about this server moreso than the other servers I've played on. That there are a lot of familiar names from previous servers didn't hurt either.
Glad to see everyone is still chuggin along and making the best of it. Will definitely keep poking my head in here from time to time to see if this particular issue ever changes. May the force be with you all and more importantly...OOTINI!