I'll end my post with some scenes that aren't in the doc, yet, but first I'd like to share some other thoughts/suggestions
To start, instead of locking into only one perk, why not change both so that they are a little less binary, a little less OP (especially together) and more interesting?
Examples I thought of: Sadist: increase crit by 5 but gain 1 lust/10 health (not shield) damage dealt.
Masochist: Reduce evasion by 5 but gain X energy/Y health (not shield) damage taken (where X and Y are numbers that make this perk balanced)
These would be less OP together since they don't really synergize and i think they fit better with the respective fetishes. Extra crit as a sadist because you're good at finding people's weak points. And i don't see why a masochist would want to be resistant to damage. They'd want to get hit, so they are less likely to avoid an attack. But, when they get hurt, they feel joy, thus the idea for gaining energy. And both perks ignore damage being dealt to shields because shields prevent actual damage.
My biggest problem with the project is the idea of grinding another sex stat. I hate grinding in any game, but find it especially egregious in a game I'm trying to play one-handed. And I really HATE the way exhibitionism works in this game. You're proposing doing sadism and masochism the same way. I really like both. Especially if that self-whipping scene becomes a thing.
Why not increase the values for each scene, but have a prompt pop up when you get to the thresholds of 33%, 66%, and/or 99% giving the player the option to cap their masochism/sadism? The idea I'm going for here isn't really an "off" button, as you would have to be exposed to
some levels of sadism and masochism before capping the stat, but more of a THIS IS MY STOP button, so people don't have to go all the way, and you can increase the scene values so I don't have to grind. Please don't make me grind.
As for sadism/masochism scenes in the game that are missing from the doc:
Sadism:
SubSera
Punishment - Spanking
Masochism:
Mirrin
First sex scene (Kind or Mischievous Steele)
First sex scene (Hard Steele)
Deep DP
Humiliation
I'm actually really surprised she's not in the doc yet.