Dear Emunas,
1) Christianity has the uncanny comparison to Chabad, like a dog to a dandelion. What do you prefer, scotch or bourbon?
2) It doesn’t matter where Chabad goes with Chassidus and their beliefs. As long as they stay true to the Torah, all is well. Same goes for everyone.
You said it goes against everything the Baal Shem stood for and I have no idea what you meant by that.
3) The Rebbe didn’t make a prediction. He spoke about excessively. It’s not just making a mistake. It would be abondoning his vision.