I think whether or not it will help a particular person is 100% related to both the people involved. By the time I went into the mentor program as a student, I was already at Advanced Reviewer level as far as my writing was concerned, but I didn't want to get voted in because I don't like the vote in process. So I went through it to become an Advanced Reviewer. By that time I had been here so long and written so many reviews, there really wasn't much for the mentor program to offer me. But, I went through it anyway.