They are good questions. I am starting with a new therapist soon, I have met with her a few times and already asked her most of these questions. It was important to me that she understands complex trauma and dissociation so I asked a few questions about her knowledge training and experience around CPTSD and DID. All therapists where I live have to have regular supervision so I didn't ask about that. I asked about the expected timespan of therapy (at least several years) and how she deals with clients being triggered but not specifically about dealing with intense emotions. Next time I see her I will ask about what happens when she is sick and maybe email policy and things like that i want to know.
Reading over your list its good for me to see that I have already asked most of them, the things I wanted to know, and it gave me ideas for some others to ask. Thanks for the list!