Israel is said to be restored BEFORE she repents (she is still offering animal sacrifice). then at the end, she repents, and ALL ISRAEL will be saved, as paul declaired.
Today I think more on the lines that the government of the church which could be called Israel was restored and not the nation Israel. What would the Israel as those pertaining to a outward Jew be restored to, natural man ? All Israel is are not born again Christian .So it would be more like all of God's people will be saved. God is not a respecter of person he does not owe any nation anything. They are in the same place as gentiles under the same law of God. Not a Jewish law pertaining to the flesh. Salvation is of the inward Jew born again of the spirit of Christ. The use of their flesh in parables was in order to preach the gospel in respect to the suffering of Christ and the glory that followed (the renting of the veil) It ended when the reformation came .A great tribulation for a outward Jew It restored the government to a previous time period. Most likely the period of Judges before there were Kings in Israel