Understood. I'm not unfamiliar with the theory.
But the sacrifices God requires in the New Covenant are sacrifices of praise and thanksgiving from His Living Body, not dead animals on an altar. Also, the commemoration of the Sacrifice of Christ was given by Christ Himself - at the Last Supper. We commemorate - remember - His Work in the bread and the wine, not by offering sacrifices at an altar.
And since Christ's Priesthood is in eternal effect by an oath from God, the Old Covenant Priesthood is not coming back to officiate over sacrifices offered on an altar in a rebuilt temple. If man decides to do it anyway, it will not be sanctioned by God and will be an abomination and insult to the Work and High Priesthood of Christ, putting Him to shame.
No, any animal sacrifices are out, in light of the High Priesthood of Christ, Who is the ONLY Priest/Priesthood recognized by God in the New Covenant and Who is not legally able to oversee animal sacrifices required by the Law. Again, the Old Covenant is NOT coming back - Christ's Priesthood is PERMANENT by a OATH from God.
Couple that with NO animal sacrificial system in the New Covenant and you can see where I don't see how the Dispensational model is workable when considering the Permanent, Perfect High Priesthood of Christ (not to mention His once-for-all, for-all-time sacrifice).
The letter to the Hebrews is extremely clear on these points
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-JGIG