Since I'm a Catholic, maybe I shouldn't get involved with this thread. But I doubt very much whether a new religion, analogous to Christianity, will emerge from this.
For one thing, not everyone in Chabad believes that the Lubavitcher Rebbe is the Messiah and still lives. I think most are waiting to see what happens.
For another, Chabad is actually more orthodox than many liberal Jews, because they still expect the Messiah, which has always been a part of the Jewish faith. Just consider all those sayings of the Prophets.
There is an unusual element because some have suggested a Messiah who dies and lives again, which does seem to draw from the Christian model. The Jewish Messiah is not necessarily expected to die and rise again--although I don't personally see how it can be ruled out on the basis of the various Messianic texts.
I'll leave it at that and let those with better knowledge reply.
See # 8.