I don't think 1) and 2) suffice.
1) Why doesn't EVERYBODY die when they lie, then?
2). Yes, God is allegedly limitless, but the branches were removed to MAKE ROOM for me. And Paul says that is true. Is God limitless, but Heaven is not? Is there a quota? So there wasn't room before, but because the branches were cut off, now there is?
1) There would be nobody left on earth.
2). 19 So you will say, “Branches were broken off so that I might be grafted in.” 20 True, but so what? They were broken off because of their lack of trust. However, you keep your place only because of your trust. So don’t be arrogant.
This was probably the start of the whole we are Jew haters, because they were pulled out, and we got in. That is not what Paul was saying. In fact God gets very choosy according to Paul, and the claim is made that even branches broken off can be replaced. Paul only makes that claim about the Jews though. That would tend to also make people hate the Jews, because they will always be a part of God, no matter what they do, even if God kills them when they lie to God in front of other people. It seems the Jews only get this preferential treatment. If Hitler was actually a Jew..... but I digress. This isn't even a male power dominance driven way of life, because Jews count themselves a Jew through their mother's lineage.
Heaven and God are not a quota system. It is a choice based on what a person wants to do; technically, Jews evidently don't have a choice (according to Paul). Trust God to be the way, or find your own way, which will only get you as far as your own physical observation. The branches were broken off because God removed them, for lack of Trust. New branches are added only based on a Trust in God. Assumingly those outside of Jewish lineage are not chosen by God. They are called/invited, but the choice is up to them.
So no, the broken off branches are like Ananias and Sapphire. They are broken off, but not to make more room and not to be kept from eternal life. They will be added back in later. It is not just about a spiritual pruning. There are secular Jews and even atheistic Jews. It would seem their earthly life is lived but as dead branches. All branches are broken off at the end of their physical life on earth. It technically represents a physically living tree that has dead (spiritual) branches, along with live (spiritual) branches. If a person is dead physically they are removed, because they are no longer part of the living tree. Paul warns those who were grafted in that they could also be broken off at any time. Being part of the tree, does not guarantee your life will not end early. When it comes to eternal life though, it would seem unless you were at one time a part of the tree, all the other trees would be destroyed. Even grafted branches could still be part of the tree and appear dead. So being dead on the tree, does not seem to be a reason to be broken off, nor a reason to be eternally destroyed. Eternal life is dependent on ever being part of the tree.
This would also tend to refute the notion that there was a set amount of souls (quota system) at the beginning of time. When those have all been accounted for one way or the other, human existence would end. It does not make any sense as reproduction is seemingly endless, just like God. The only thing that will stop the process is God, not a quota system. The tree was not the only tree, there were other wild ones, which represent the whole of humanity and their souls. Technically Christianity did not replace Judaism. Nor does the tree represent religions. God only has one tree, and all other trees are wild, regardless of a religious name tag. The tree is a combination of people chosen by God and those people who chose God.
You just said Jesus couldn't be tempted, because he was God. I hope you realize this does not make much sense, when discussing the temptation of Jesus as a man.
If you want to get technical, James said God could not be tempted of evil, in context give into evil. Satan is not the poster child of evil. That was Adam. Satan represents power, and the ability to do a better job than God. What Satan tempted Jesus with was not evil, but life itself free from evil. But, even Satan knew God would not give into that. It was still the temptation of Jesus. If there is a contradiction it would be, Jesus would not even be able to make a choice against himself as God. Yet we see Jesus the human seemingly "question" his mission on earth at the end.