Bendis was on New Avengers for 103 issues. He'll probably be on X-Men for an equal duration.
Just look at it this way, the journey is almost 1/4 complete. But I agree his X-Men is rudderless. I mean if it's correct that he dislikes Morrison's run and wants to put everything back before Morrison came along then his model is pretty much stagnation and going through the same mutant persecutions we have been seeing time and time again. Basically reinventing the wheel.