No. Skipping is not enough. There are fetishes where skipping is not enough. Like Lesbians, NTR, Swinging, Sharing, Femdom, Rape, etc. So those have to be completely avoidable and not happen in any situation if the player so desires. Otherwise you will lose a large number of players. They won't even touch the game if those things can't be made avoidable. In skipping, shit happens in the background and that's not acceptable.
Another thing if there is a harem in the game, then lesbians don't fit in the harem. Because then it's no longer a harem or more accurately it feels like it's the harem of those bitches who fuck each other and the MC is just a side character and a plaything to be used every now and then. My harem never includes lesbians or bi characters. It is then no longer a harem i.e. MC and women.
Eh, stop acting like you speak for all players.
Just because YOU don't like girl on girl sex in harems, even if it's a group thing, does NOT mean that "a large number of players" don't like it. It' means
you don't like it, and any other guy who is insecure in their sexuality that a little non
penetration sex they aren't involved in, makes them feel inadequate.
Some of us don't mind or even like lesbian or girl-on-girl sex is fine and dandy and it makes group sex much more interesting. There are probably more harem players (who aren't insecure) who might LIKE if the girls interact with each other in group sex scenes, than otherwise since a good portion of the male sex thinks women on women is hot and sexy.
I do agree that things like NTR should be avoidable, and really anything non vanilla so some don't get their panties in a wad, but for fucks sake stop acting like you're speaking for more than yourself when making proclamations on what "a large portion of" players may or may not like. The only thing I have really seen a majority of harem players get up in arms about is other dudes fucking the women without a way to prevent it. And this should really only apply to current or future love interests.
Sure some guys are so insecure that even having like a porn scene with none of the characters involved will set them off but they are in the minority.So unless that happens things are ok.