Odd thing: as I understand it, you don’t need a Temple to perform most of the Temple rituals. You just need an altar. And, for the korban pesach (a.k.a. H’Kadosh BBQ), the altar can be anywhere on the Temple Mount. There’s really no excuse to not have restored the korban pesach, at a minimum.
You are probably right. I am no expert, and I defer to the Gedolim on all issues. Certainly restored sacrifices of some kind would go along way towards disassociating Judaism with secular humanism and unitarian-universalism, with which it has unaccountably become confused in the past three centuries or so.
My one and only concern is that some people may attempt to replace the Halakhic Temple with some sort of ecumenical center, or build one as a "symbol of the nation" or some such thing.
I just hope I didn't give the wrong impression.
“Odd thing: as I understand it, you don’t need a Temple to perform most of the Temple rituals. You just need an altar.”
That is my understanding, as well.