What Paul (and you) are suggesting is an active purge of the church. But again ... how would you do propose to do that in a manner acceptable to God? Is it a general purge of homosexuals (and must the church therefore test its members for homosexual tendencies)? Is it a purge only of those who are out of the closet? Is it a purge only of those who are out of the closet and unrepentant? Is it none of the above?
What, precisely, is the goal here? I think a lot of folks have not fully though it through, and thus have not addressed the steps needed to accomplish that goal.
For one very interesting take on the subject, I would recommend to you the booklet "True Union in the Body," published by the Anglican Communion Institute.