All, There were a number of locations for the the Temple. The Northern Kingdom built the Temple on Mt. Gerazim, still a Holy Place for the Samaritans. The Jews of Ptolemy's Egypt built the Temple at Elephantine Island, once thought to be the location of the Ark of the Covenant. If we could build the Temple somewhere other than the Temple Mount, it could be done without a world religious war. Of course, any Temple would be accompanied by reconstituting the Aaronic priesthood. Leviticus and Deuteronomic rituals would be practiced. But do we have 100% descendent of Aaron who is pure and free of sin to be the Head Priest under Leviticus. I doubt it. Maybe we should stick with Rabbinic Judaism for now. We have had a system of direct relationship between man and God for the last 2,000 years. Do we need priestly intervention after all this time? Would 3rd Temple priestly Judaism be a new religion in opposition to Haredim Rabbinic Judaism? It makes one think.
Yemen's Houthi rebels commit to peace plan in letter to UN chief, BBC reports (Haaretz)
from the article: If the Vilna Gaon was right, the 3rd Temple is on its way