User blog comment:Haridva/How to Develop a Series/@comment-5737527-20161101003614

This is a good list. I'd add that creating characters will help with the plot and episodes, since their personalities and interests will help you create spotlight episodes and plans.

One thing I'd like to see more people put thought into are their villains. Most of the time there's just a made-up name and a "evil alien conqueror" setup. Tying the baddies to the theme makes them more unique and interesting.