I think the fairy from Fairy Tale probably qualifies as chaotic neutral.
I think you're right. It's one of the plot lines I haven't paid much attention to. But what I've found on this site is that it only takes one moment in the series to get my attention. I pretty much ignored Waiting Room until issue 5. In fact, now that I'm looking at my collection, the hook that gets me (or doesn't) is usually around the 4th or 5th issue. Fairy Tale... I'll give it a re-read and imagine she's a villain.
Where's our Chaotic Neutral/Evil mind controller to disrupt the ordered worlds that are spinning out here?
I read fiction to escape from all that.
Yeah, I'll invoke the "we're all here for different reasons, I hope" thing. I read (erotic) fiction to explore ideas I could never in real life consider like "what would I do with mind control powers"? There's a part of me that thinks I'd probably go insane and wonders where that would go (with good writing and art).
MCC already has plenty of stories that cover the scenarios where the controller doesn't go insane with the power and... turn it into a prostitution empire (Bearing Gifts), builds a huge harem (too many to list off), runs an underground slave ring (Business as Usual), becomes a stage magician and takes liberties with the "volunteers" (Stacked Deck, After the Show), completely subverts an almost-willing submissive (Template), is a total dick (Bigger), and is not a dick at all (SJI and Hidden Knowledge, although he's been shifting in a dark way).
And, to keep on topic, Door to Door is a wonderful exploration of two themes I enjoy very much: a couple with a power dynamic that gets reversed by mind control (Chet and Annette) and what would happen if a 3rd party discovered and inserted himself into it (Jim). I love that I can identify with both Chet AND Jim - the imaginary controller in me could be either. It's sort-of like parts of Waiting Room but more personal. And I didn't even get the joke about the forum thread until hereno mentioned it.