@DaWaterRat Well I do agree with you. I actually like both kinds. The cliche "Pretty Pixies" ones and Brian Froud's. It would be nice to add elements of both, imo. But that's just me.
I just don't think they'd go 100% Brian Froud due to a lot of adult themes in the books. I like the idea of taking inspiration from powers and some looks though. It would be really fun to have faeries of all sorts of different varieties like the ones you just mentioned from the books.
Though if faeries do come out and it's the cliche type, there could be a chance the PC players will get/create some nice mods to perhaps make them look or behave closer to Brian Froud's? I mean that's pretty much what some people did with mermaids. We have so many custom tails, skin details, make up, and other things now, and a mermaid expansion mod that gives them several new abilities. That and the Sims community seems to have a thing for hybrids, so maybe we'll be able to have a mod to create faery/spellcaster hybrids, or faery/vampire, etc, etc, you know what I'm getting at lol. With being able to create faery hybrids, one could make them much closer to the books.
Basically, even if it is Pretty Pixies as you call it, there's still hope I believe.