It's not that simple. Rachel's spankings are pure discipline. When the MC does it, it becomes more complicated and depends on who is receiving it. Take Chloe for example - naturally submissive with obvious masochistic tendencies. She is still discovering her tolerance and limits with the MC's help. Her spankings are more of a reward and can easily be a prelude to sex.
With Emily it's the opposite. Rachel uses it as a deterrent, but for the MC it can be a tool of dominance, establishing authority and control. As their relationship progresses, it can either take a more... romantic turn or she eventually submits, even though it doesn't come naturally to her. In any case, her spankings will never be a form of foreplay.
Rachel uses spanking as deterrent to enforce her rules, e.g. doing chores, study, etc. Her punishments are painful.
When Rachel orders mc to punish Linda, it gets close to sadism. Linda gets much heavier slaps than Rachel from mc or Susan during their 20:00 session. Maybe Rachel is jealous of Linda.
Chloe is not a submissive. She uses mc as a tool for her fantasies, but when she is not in mood or mc is too hard on her, she says no and walks away. She obviously likes the light sting from a punishment below her pain threshold or the humilation of a public spanking, but it is her choice.
Emily might be willing to do mc a favor to avoid punishment, but when he would punish her without reason or too hard, she wouldn't accept it and it would worsen their relation. MC can only punish her in the context of rules set by a higher authority like Rachel. I wonder if mc could give her a butt-massage-spanking which stimulates her anal or other sexual ambitions and which is acceptable for her (as foreplay). I don't think that she will submit to mc. The blowjob scene in the interior is already very unrealistic ... And she was disgusted by mc's behaviour when they had anal sex the first time.
(Erotic) Punishments can be :
- painful
- sexually stimulating
- boring
In a game about mostly consensual spanking and sex, the punishments by mc should not be too painful but instead try to also stimulate the girl (by touching, petting, massaging, caressing her) so that she gets an interesting combination of pleasure and pain. (If she doesn't get wet from it, it was a waste of time.)
The only exception is Rachel when she gets a deterrent punishment by mc to taste her own medicine. But mc can also give her a pleasurable spanking.