The current find/setup party system is great

[solracht]

The flag system was preferred and used because it allowed 5 out of 6 players to find parties while literally having to do nothing. Only the party leader had to form the group and actively seek/ask people.

In this system, it's the opposite. Everyone but the party leader has to constantly check to see if there is something going on.

I honestly doubt it'll ever catch on. While the extra options and filters are really nice, I don't think it'll be widely used if people have to constantly seek the events themselves.