I totally agree with all therapist should be under supervision and also have there own therapy to get a sense of what we go through in therapy.
I think it should always be known what the boundaries are from the very first session like outside contact ect. My last therapist change things on me two years ago and it still hurts allot. I didn't know therapist could be so hard and harsh. I was only allowed 1 session every 4 to 5 weeks, hardly no phone contact. I never broke a boundary but he thought it would help me progress faster.