What are the pros and cons of writing fanfiction, and what types of fanfiction work best to inspire rational fiction?

Timestamps:

0:40 The Three Types of Fanfiction

3:13 Examples, and where Rational Fiction falls

5:27 What are the pros of writing Fanfiction?

7:38 How do Daystar and Alexander find it useful?

9:25 Con 1: Limited Audience

12:18 Con 2: Expectations from Canon

14:39 Con 3: Lack of Profit

16:18 Genres that are easy and hard to rationalize.

19:55 Genre Ghettos

21:15 Daystar rants about Magical Realism

24:44 Fanfiction Ghetto

26:47 Best stories to rationalize

32:44 Finding new solutions, creating new problems

35:53 Bridging the gap between Fanfiction and Original

Fiction