While I agree with OP that having to shout hours (yeah I did try using "search" feature but it is useless right now) in order to do a quest is not too much fun, I also think that some content MUST be done for groups.

Let's take Job quests or new GC quests as example. There's some where you can go through alone, but some of them ar indeed good to be group ones. Having a mob you can solo as final boss in a job storyline would look so lame.... instead they are challenging even for parties.... well not THAT challenging no more lol