Spinning off from another thread where DBActive wrote about some long series here: "you can pick up any part of the series and not have missed anything."
I get the popularity of series where the characters don't significantly evolve. Most television series are that way and a lot of long running book series are that way (particularly in mystery and thriller).
I also get the popularity of series where the characters only change slowly over what are otherwise self-contained episodes. Again, TV sitcoms often have characters pairing up or changing jobs and such over the course of multiple seasons, but it's slow and often not a planned arc (more—"we need to keep this fresh, so now what?").
I also get the desire to see the characters grow and change over a long series. A long arc can be really satisfying if it gets finished, but can suck if it doesn't (I won't call out a couple of well-known mainstream fantasy authors here, but you know who I mean).
But as a writer, I'm not sure if there's a way to satisfy both camps or not. Especially in erotica. Many of the folks here are just reading for the sex scenes and you can only do so much before it becomes "wash, rinse, repeat."
Ulterior motive on the table time:
I've been working on a very long series—it'll be ~800kwords or more when it's done, broken up in to seven books. Book one will start being released to my Reamstories subscribers this fall and it'll show up on Bookapy and also here in the spring.
The story is planned as a full character arc. The main character is going to go from a moderately conservative guy to someone who regularly engages in wild orgies. It's going to take that many words because I need the main character's growth to be believable and that means slow change. Real people don't change overnight and "Road to Damascus" conversions are rare.
But… I also want the individual books to be logical self-standing volumes in and of themselves. If you only read book one, you get a satisfying story. If you skip book one and read book two, you get a satisfying story. I've figured out how to do that plot wise, so it's now mostly figuring out how to work the recaps of what happened earlier in without it being clunky.
So… would this satisfy both camps?
And a more general question: what's been people's experience here with erotica stories in both camps? Is episodic enjoyable enough? Are the long arcs better?
What would you want to see in a long series and what would drive you crazy?