Well, the only way to enter the current Savage tier up until this point was to have your entire party in the zone and talk to the NPC to enter the instance.

But when the cross-server Party Finder is implemented, it will be impossible for the entire party to be in the zone at the same time. The raid finder, I believe, is the remedy to that solution; and I believe it's the only reason it was added to the game in the first place.