Assuming this works and everyone remains happy with the Raid Finder system, is there a future for the Raid Finder model in the Dungeon Finder system? We know now that Blizzard has entirely revamped the 5-man system in Mists of Pandaria, offering new PvE encounter zones, timed instance runs, and no normal versions of level 85 heroic dungeons.
But what if Blizzard decided to follow the Raid Finder system instead and redesigned 5-mans with three tiers of difficulty? The first tier, the Dungeon Finder mode, would be designed to be easy enough that five puggers with no voice chat could queue for it and win. Normal mode would require five dedicated players working in coordination with one another but would still ultimately be easily conquerable without significant effort. Heroic modes would require hours of wiping, retuning of strats, and a dedicated group of players.