Listening to a podcast during your commute is clearly different from watching a lecture, taking notes, and solving problems. Not every concept is conducive to passive learning. That's no problem. Let the podcasts cover concepts that tie into further active study.
2) Personalizing content delivery to 1 on 1. (Having multiple videos per content area and figuring which works best for each learner - or perhaps videos that can be spliced together in real time based on the learner)
Their secret sauce is the data on student understanding available to teachers, not the videos themselves.
IMO, building new courses in disciplines for which learning materials might not be readily available, but are important nevertheless, without diluting the standards they maintain.
Example : Basic carpentry ?
I'd love to see more interactive exercises focusing on problem solving, creating projects, collaborating with other students instead of answering a bunch of quizzes after listening to 30 minutes of video.