So i did think about this a while and i was worrying if it would be a nice idea so let me explain it a bit. What i am thinking about is another party finder besides the current party finder but only your friends would have access to it.

Lets say you want to do your daily roulette or a specific dungeon with people from your friend list and not random people. Now you could click on "Party Finder (Friends)" and it opens a windows where you can set up Dungeon/Ilvl/Roles ect. just like the regular Party Finder. So when now a friend of you opens his "Party Finder (Friends)", he can see your search and join you. Maybe an additional on-screen message like "Zeniba Zanarkand is looking for a group for dungeon XY" wich appears on my friends screen/chatlog (This function, however, should be able to turned on/off).

I would personally die for such an option. I think its kinda sad that there isnt an option where you can play content with a bunch of friends from your friendlist, without /asking all of them directly with a /tell to join you.