Stand in Temple of the Ages for five minutes and try to find an Underworld group.
UW runs are important because each person needs to pay to get into the dungeon, and every party I have ever been in, has to chip in for the CON sets used in speed runs which, costs money. All these added costs and work are investments and people want to make sure they are with a team that can work together well enough to get through the UW. Also SC groups run specific builds in order to make it "The most effective" and if one person cant hold their own, the entire party will die or wipe and you will lose the benefits of the CON set.
Dungeons are different than UW, in that you don't need to spend any money (besides armor repairs) to get into the dungeon and play.
Also the requirement of "builds" is out the window.. Being able to ping you skill set wont be needed. Sure some people might not want to have a full group of Guardians or Thieves however I ran a group of 3 guardians and 2 thieves and we did just fine. We were able to change skills and utilities in the dungeon which you can not do in GW1. So we were able to change plans or regroup when we failed, and continue on.
So far the dungeon groups I played with, certainly wanted a mix of classes, however with only a requirement of 5 people, there was actually always a shortage of players looking for a party, so we would just grab whomever was around and jumped in.
Also asking to "exchange your 200 dungeon tokens" will probably make a high majority of players not want to be in your party and will go else where.
Edit: There will probably be players who do ask for tokens or some form of item that shows progression through the current dungeon, however for the lvl 35 dungeon was not difficult at all and PUG groups rolled through it fairly easily. I do not see everyone doing that for low level dungoens, but we have yet to see how difficult the lvl 80 dungeons will be.
Edited by BlueTooth, 20 June 2012 - 03:12 PM.