1. Unskippable repetitive random events. For the love of god, add a tracking variable and/or allow players to skip an already seen scene.
2. Sleep molestation. Crosses a line for me.
3. The obligatory shower peek scene. Yes, women are generally naked when they're showering. But there might be other ways to add an early nude scene.
4. Linear stat grinds based on repeated scenes. Similar to 1, this annoys the fuck out of me.
5. Free roam sandboxes without some kind of map. No, I don't want to repeat the "bedroom, bathroom, hallway, kitchen, street, school" loop every day.
6. Misunderstood BDSM. BDSM is more than just light bondage and spanking.
7. Energy meters. Just lazy and unimaginative game design in my opinion.
8. Incest. Alright, here I gotta explain myself: Some incest / "landlady" games are actually kinda neat, e.g. Sisterly Lust was one of the games that actually got me into the porn game rabbit hole, even though it's extremely "tropey". But once you've played the few good ones, the scenario gets stale fast. I wish there were more games with MCs that lead an actual adult life. You know, having a job, going on dates, that kind of stuff. But maybe I'm just getting too old for the incest setting, idk.