A fine example of Hineininterpretierung. None of what you just said would have had any meaning to the Jesus that walked on Earth. Even the name Christ isn't Jewish, it's the Greek version of mashiach (a word Jesus would surely recognize). Lastly, claiming Jesus was not a follower of Judaism is bizarre. He was, in fact, a very devout Jew. Read your gospels. He came to fulfill the Law. You can't get any more Judaic than that. (Your claim that the Jews strayed form Jesus is equally bizarre. The fact that Jesus, while on Earth, had a limited following, was intentional: he preached to Jews, and his teaching had a very limited effect and reach. He rarely left Galilee.)
Isn't 'mashiach' more likely replaced with the rather glaringly similar (and Greek) term "messia(s)"? Which means 'mediator', btw. Christos means christened, ie anointed.
Not sure if Iesous (Jesus) is just jewish. Doesn't seem evidently tied to greek, and names routinely were just altered to sound closer to greek, while keeping the foreign syllables that obviously would have no etymology in greek itself.
As for Jesus' end, well, if he was a god (which is pretty much the point of christianity and the NT) then it would be rather bizarre of him to will to teach jews but utterly fail there. Gods do not tend to be argued to fail unwillingly, even by the tenuous theologies.
If Jesus is seen as a human, then it becomes a lot less significant to note just what he aimed to achieve.
Re mosaic law, Jesus himself in the gospels claims that the letter of the mosaic (ie judaic) law is dead if one keeps the OCD-filled hundreds of orders there, while it is alive if one has faith and is love-centered. Again, if Jesus is seen as a mere judaic teacher then his role is pretty minor there.
Frankly one has to doubt that a god would actually happen to care for a single 'race', and moreover a race like the archaic jewish people, who seem far likelier to have invented this kind of anti-hero and anti-human god in the style that Nietzsche argued in his works on the genealogy of christian ethics. "The revenge of the down-trodden, of the pariah, against life and positive powers of strength and healthy virtue" etc.