Guild Wars 2

So this idea came to me yesterday while doing Fractals. I like the idea that a group must go through 3 dungeons in order to complete a run. I think this idea would work well if applied to dungeons as well. By which I mean players could join a group and complete all the paths of a certain dungeon consecutively which would increase rewards for each one (say increased MF, tokens, gold for each path completed). In order for this to work I think that the group should have to complete the paths without being able to leave the dungeon at any time. It would definitely encourage players to explore the paths less traveled and would allow for a more traditional feel to dungeons (by exploring them in their entirety).

Of course, this would be entirely OPTIONAL since not all players want/have the time to complete all paths of a given dungeon consecutively. Thoughts?