In my opinion, Christianity will be transformed as a religion in the next several decades. It won't be exactly like Buddhism, but it will be much closer to it than it currently is.

The reason I say this is because people are drawn to the concept of enlightenment. It's human nature. Ultimately, it won't matter if Jesus didn't teach enlightenment because people have already selectively chosen to look past many of the flaws in the Christian religion. There are strange things in the Buddhist writings about Buddha, but they are easier to accept because Buddhism has always said it is about enlightenment. So one can rationalize that it's all pointing to that, even if it seems a little weird in places. But many Christians tend to see Jesus as a very nice gentlemen who wants people to love one another. They don't see him as a man who argued with Pharisees or chided people for not having enough faith or saying that there would be a final judgement where most people would be cast into a lake of fire.

There are people who claim to channel Jesus and there are people who claim Jesus traveled to India and learned Buddhist teachings. These are not widely accepted, however, according to Pew Research a third of all Americans believe in reincarnation. And for young people the numbers are higher. It may sound unsettling for some to imagine this, but the revisions that are going to be made to Christianity are necessary, even if it ends up adopting a mostly fictional account of what Jesus taught. People already believe a fictional account of him anyway. And if the revisions are a better vehicle for teachings about enlightenment, they will take hold regardless.