I could not agree more. I was both simplfying the position, and posing a purely hypothetical situation. Namely, even if there was a future mass conversion of the jews (which I've already said in previous posts I consider highly improbable), the net result would still simply be an enlargement or enrichment of the church. There is no separate, earthly future for them apart from the body of Christ. Heb. 11-12 makes that abundantly clear.