Mark, what people or what entity do you think is suppose to go through the Tribulation? You're still thinking in terms of "Church" and "Israel" aren't you? Or the Church has usurped Israel (and Judah?), right?
I think your prophetic-paradigm would profit much from this article: The Hidden Irony of Christian Replacement Theology.
What is a Tribulum used for? It was/is a farm instrument that presses, rakes over, and separates the wheat from the chaff.
If the wheat has been "raptured" out before the tribulum is used, what purpose is there for the tribulum?
In Luke 21, Yeshua is talking to believers and says tribulation will come upon all those upon the earth. The chaff is burned in the fire, not the wheat.