The Real King of Israel

It occurred to me that perhaps the ancient Jews who expected their messiah to lead Israel to freedom against Rome might not have been wrong. In fact, the recent readings in the Catholic church (during the Christmas season) seem to really imply a redemption of Israel as a nation. Perhaps the only thing lacking, and still lacking, was the recognition of Jesus as that Messiah. What might have happened had the majority of the Jews had simply believed that Jesus was the Messiah? Here is a possible subjunctive history, based on my recollection of the scriptures.

1. The temple aristocracy would probably still have convinced Pilate to crucify Jesus.  This is a good thing, as it is through the Crucifixion that Jesus obtains our eternal salvation.  I think we can all agree that these politicians, like ours today, were likely self interested players.
2. All Israel would have mourned the death of their Messiah, and waited for their God (that is, The God) to react.
3. The Resurrection would have been met with great jubilation.  The evidence of the past three years would have been confirmed, and Israel would realize the the whole Messiah thing was going to proceed quite differently from their expectation of military victory over Rome.  They would naturally await commands from their Leader.
4. I would not presume to speculate what these Orders would be, but we can, based on both history and the scriptures though, we can speculate on what the results would have been.  
1. Many Roman soldiers would likely have been converted, vastly reducing Rome's ability to suppress the Jews.
2. The new Christian community would not differentiate the Jewish religion from Christianity, although the temple aristocracy might have attempted to keep up the ruse to retain their power.  With everyone following Jesus though, they would have no real power.
3. Since Judaism as a religion was tolerated by Rome,  there wouldn't have been the persecutions that occurred in our history.
4. Military attacks on Jesus and his followers would undoubtedly have occurred though, and victory after victory would have accumulated.  Some, perhaps by Jesus' being the best military strategist since Alexander, but most by odd happenings, like walls falling down because of trumpets being blown.
5. Since Israel was a Roman territory, there would not have been conflict with Rome, and Jesus would likely have been consulted by Roman generals in the region, although, in the years 30-100, most of the action is in Britain and Germany.
6. By around the year 100, people would have noticed that Jesus wasn't getting any older.  I presume that saved individuals would still grow old and die though; how else would they get to heaven?  There would likely be a clamoring for Jesus to take the Roman throne, although not by force.

I think we'll leave the rest of the history to your imagination.  How the Roman aristocracy might have responded is hard to predict.  Some might have been converted (this was the period of the five good emperors), but Jesus' triumph would, of course, continue.

What would happen if the Jewish nation (that is, the worldwide nation) converted now?