I'd like to think that before we'd actually proceed to divorce that we would at least make some attempt to fix the marriage.
In the beginning, I asked that we go to MC. We did not. My H was seeing and IC to figure out how to tell me he wanted a D. IMO, if we had gone to MC, it would have been "fake" for him, in that he would just have used it to say "ok, I tried". Fortunately, he's more honest than that.
What we did do several times was use a DB coach to help with regards to kids. That was really helpful.