Thinking about what it is I've been disliking about interviews lately, I've realised that I have a preference for person-to-person verbal communication, as opposed to interviews by mail. Reason being there is more genuine input-output, the interview subject has to think on her/his toes, and there's more a sense of actual communication. With e/mail, the subject has the advantage of pondering questions which leads, it seems to me, to a more contrived and therefore, possibly, artificial presentation of ideas.
Of course e/mail interviews have their advantages and of course one-one-one isn't always possible. But from reading the interviews in SI, and from the few I've transcribed, I've found the spoken interviews more fulfilling to read than the written ones.
I'm putting this forward simply as a personal observation, not a vote either/or. Please do contradict as you wish.