So I want to clear something up, you say that AV only gave femdom fans action.
This is not true. I am not a fan of femdom, I would respond extremely poorly to a woman actually slapping me in the face nor do I ever choose the femdom option in games when given a choice. Why did I play this choice though? Because it is honestly an extremely light version of femdom, sure, she slapped him but everything else was extremely hot and I love Triss. If she needs to take a little control to make herself feel safe and have fun, I'm okay with a one time fling.
As
Korben Dallas (my man) explained, this scene was a bout Triss trying to desperately not give into her lust for MC and have sex. She didn't suddenly have a femdom flip, she wants to have sexy time with MC but as the older sister she isnt liking how fast this is going and this is her compromise to slow things down. You say that there is no indication of her having even an interest in this but lets look back at the story, is Triss not the sometimes smug older sister always in control? She has always had that air of "Im the older sister, he's mine" I mean, just look at her reaction to Nina! Is it really completely out of left field that she might try a little light femdom play with the man she loves to slow things down while addint some spice? (and failing to not give in if you played the scene.)
I think you are projecting an intent by her that is not there. To Triss, this is a silly little sex game, meant to bring some spice and give her a way to slow things down. I'm sure had the Dev more time, he'd of put an alternative option here.
I think your issue is the "And maybe forget about all this? Alone, maybe?" line.
She is meaning we leave the Femdom stuff alone because the very next scene shows her sleeping in bed with you.
She doesn't spurn you if you say no to femdom, she curls up in bed with you instead seeing her actions made you lose you're erection, same as any gf would her bf who lost his erection during sexy time.
I get people not liking femdom, I do not myself, but I played this scene because it was something light and loving and bore all the halmarks of a young couple trying things out to see if they like it. Anyone who first started BDSM play with a partner and tried different roles out to find out what sticks will instantly recognize the bumbling and missteps here. Should there of been more talk about this before hand? Absolutely, but for as light as it is, I don't get the viseral reaction.
As for slamming the dev for including it?
That is completely unfair, he includes an option to avoid (not just skip, but avoid it all together), there are 3 other sex scenes in this update (Eli/Sarah/Alice) and its not like we arnt going to have amazing scenes with Triss in the next update if this ending is any indication. Its okay to not like it, its not okay to pile on the dev for having it in the VN.
As for the whole Girls x Girls and Girls x Girls x MC in a harem...
I have a feeling we will never agree on that. I am A-okay with the girls of a harem playing with the other girls of a harem. Some girls will, some girls wont and that's okay so long as it all stays within the group for me.
Also, this has always been a harem game, I think the main ending will be a harem ending, there are options (like the Kiara one ) to instead choose a single girl but as this game is ending, I wouldn't hold my breath on not including all the girls loving each other in one big happy relationship with MC as the center.