One the first point I agree with Anup - different folks will be attracted to, or do better with, shorter (or longer... or middle-length) content. As long as you feel you've covered the topic and provided a good learner experience length (almost) doesn't matter. I haven't yet added a lot of content to my courses. Honestly I'm still watching the feedback to see what people say, but I do have some ideas for a few of them (mainly adding shorter courses on background information, or things I mention, but don't dig into, in the course).
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