I’m 100% fine with a program like 60 minutes interviewing someone for an hour and making it into a 30 minute segment. It seems like in a good interview that has a lot of back and forth discussion between the interviewer and the interviewee there is going to be a lot that comes out that isn’t particularly useful or interesting. It also seems like it would cut down on the games where the subject of the interview is trying to stall and run out the clock when being asked hard question. 

If edited in good faith, the output will be a more watchable interview that gets watchers to the meat of the interview in less time. The person being interviewed should have full access to the unedited interview to ensure they aren’t edited unfairly and out of context.