Yeah, this is a real problem with a lot of devs, very glad to see you're practicing restraint on that front. There's nothing worse than a really good model with hideous gargoyle facial expressions.
Yeah i think Irredeemable's works are pretty mild and acceptable (though the wife kinda creeps me out because she reminds me of someone i know), and I'm saying that as a person with a relatively high aversion to realistic 3d human models.
What gets me excited about this projects is the execution and progression.
I also like the stats based mechanics of winning out H-scenes via different approaches.
Though In my suggestion it should be something more like this.
Affection - winning consensual sex opportunity via developing romantic relationship (romantic relationship)
eg: gift giving, romantic dates, saying the right romantic words at the right romantic time.
Current Meg route is a good example of this.
Lust/horny-ness - winning consensual/non-consensual sex opportunity via making the character more sexually
receptive/sexually aggressive (sex friend relationship).
eg: massage/groping, reverse voyeur, sexy dialogues, watching porn, aphrodisiacs, spotting a hard on.
Current daughter route is a good example.
Corruption - winning non-consensual sex opportunity via making the character submissive
eg: blackmail, rape/harassment, mind control drugs,
The use of mind control drugs, or that cheer leader character is a good example.
Interactions and dynamics between these parameters could lead to different development.
For example Corruption + Lust leads to mind break or sexual addicition