I published this post on my blog, and I wonder if people agree with my idea, or have other perspectives or ideas to offer.
The TL;DR is basically that I wish fantasy series had special editions published that cut out all of the "recap" exposition in the sequels so that it doesn't drag the narrative down for people who are reading the whole series one-book-after-another.
http://www.andrewstirlingmacdonald.com/2016/05/your-favorite-epic-fantasy-series-im.html