The group finder is completely useless for Heroics.
Just about every heroic on every planet is phase locked. Yet it still queues with everyone in your planet who is looking for a heroic group where, more than likely you or the others are not eligible for one of the heroics in question.
Such a huge oversight.
And this completely ignores the fact that just about every H4 can be completed with four DPS and one healer or 2 DPS, Healer, and Tank comp. Yet the finder is locked into putting you into a 1/2/1 group.