Moan sounds were used until 0.8 or 0.9 (Season 1 ends in 0.12, and Martha's first scene was in 0.10). I received VERY bad feedback about them, so I removed them from then on until I have the resources to find, at least, 28 different moaning sounds (one different voice for every potential LI).
Your idea of tying the moaning to the voice channel is great. I will apply it when (if) the moaning reappears.
In Season 1, the anal scene with Emma and the last scene with Norah, which both appear after Martha's scene, have moan sfx. In Season 2, there are some that also have moan sfx; for example, Maddie and Megan both have moan sfx in their scenes (for Maddie, it's the scene where she can be impregnated). Maybe the High FrameRate mod adds them in?
Also, sad to hear about the VERY bad feedback about them. They seemed fine to me; there's certainly worse out there. But probably the best fix is to ensure there's a separate option to turn on/off the moan sfx. Putting them under the Voice volume setting is one way to do it, but another could be to just have a separate volume setting for them (in case you add dialogue voiceover at some point and have that under the Voice volume setting).
Some ppl just hate moan sfx, so having an option for them to turn it off, without turning off all sfx, tends to be a must. Otherwise, even with your "28" different moaning sounds (which is very unrealistic anyway), you still will get "VERY" bad feedback from those ppl. It's just not possible to make everyone happy with moan sfx.
