I think it was great when you could choose multiple roles (If I remember correctly) in the group finder or have 4 DDs a valid group.

But that is actually not my main point and I can live without the above thing. My main point is make some king of a "lock" to the party where you can still search for a random dungeon just with less than 4 people. Lately I have been playing with my 2 friends who are new to the game and I want to show them things about the dungeons too however while a manual dungeon run is available I don't want them to miss out on the rewards for a random dungeon and q-ing into LFG isn't optimal since we usually spend more time in the dungeon than the average person and stagnating the random guy who happens to be with us is not good. So a kind of party-lock where you can enter a random dungeon but with 2-3 people instead of 4.

You can even adapt that to an alternative version of the dungeon where you only need like 2-3 people, which is easier and has less rewards.

What do you guys think?