It seems like Neil and maybe Erik are important characters for the other routes, but not essential for the sharing route, as some people say they avoid them altogether. That's fine, but how hard would it be to tone their lines down, or do away with their advances, if you're not on a cuckold or cheating route? More than a variable check and writing a bit of new text? Ideally, an extra render or two to account for the conversations and/or different attitude going into the scene - the sex itself could play the same, in all its animalistic glory, with a different text if the FMC does much talking or thinking.
Although it seems to me like the lack of conversation between MMC and FMC is the real handicap on the sharing route. If they talked about Neil and Erik, made their attitude clear about them and provided a context to endure their advances, they might fit in the sharing route. As is (and re-stating that I haven't played the game yet) it seems like they're the kind of creeps that you often find in your average "NTS" game, not in proper, "educated" sharing games
It's understandable why some are worried; PTSD from similar plots.
Fable giving the reader control over the wife is what's making WoD the exception to the "norm".
Neil is obviously a key part of the story. Don't really have a problem with the interactions with Sarah, because I control her reactions...
Annoying, yes. Do I want to bury him in the swamp, yes. But, it's tolerable.
Erik is just the token BBC for cheating/NTR and hotwife/cuckold NTS.
I do agree, I'd prefer Alex & Sarah talk... but even if they do, they still won't be aware of Neil's (or Eva's) intent, yet.
The only thing Alex & Sarah talking would open up for "sharing", is Neil hooking up with Sarah as part of the couple's game, rather than Sarah cheating. And that can be delayed...for now...until Alex & Sarah figure things out individually...
The more I think about it...I'm a little more ok with what Fable is doing, because knowing what we know as the reader, I still wouldn't share Sarah with Neil...

However, I would let her lead him on and on, tease, flirt, but never letting Neil get what he wants.
Can't do that right now, because the conversations are cheating/NTR rather than couple exploring their desires or playing a game...
The thing that feels "wrong" about the sharing, is that the story structure makes it feel like Neil and Eva are "winning", instead of the couple really exploring, deciding desires for themselves. But, the reader has full control, and it's really our intent, not Neil and Eva's deciding for the couple.
Personally, the story structure makes me want to push back against the sharing because of Neil and Eva's influence/manipulation, rather than give into the "sharing", and that's why the "sharing" doesn't feel as good as it could right now... It's getting better though, slowly, and that's fine. Most VNs rush to the first sex with another dude. I'm wanting this one to rush to the couple having an open discussion...
I really, really like WoD, it's really good.
Just have to keep the irrational negative thoughts at bay...

Because Fable has done a great job so far.