I prefer Triss, yet I don't dislike Yen's character per se. As a mostly game player (read only some of the books) If anything I was very intrigued by her character. I decided to pick Triss first and then Yen'S charm captured me, even if some parts didn't resonate with me that much, but still, in that last wish quest, with them in the boat and the music, I gotta confess, I almost got caught in the tango stuff. I decided to leave her for a second walkthrough. That never happened because of the whole Triss content stuff which left me angry and I somehow took it on her character entirely for metagaming reasons. Anyway, point is, not all Triss fans are equal lol. And there are also some suggestions/ideas/missed opportunities about Yen content too. Here is one of mine:
The highly anticipated reunion should have been much much longer. Sitting in the park, playing Gwent (instead of the nobleman, it should have been Yennefer the one with the OP deck), throw some teasing in the likely scenario that she wins. Hell they could have made a strip Gwent between the two.
There should have been some talks about what both had been up to, making Yen the IMPORT-your-game character, instead of the general. Perfect opportunity to get Yen thoughts and opinions on the choices we’d made in the other two games. And perfectly logical too I mean, if we’ve been searching for her six months in a row and never seen each other in years logic would dictate that one of the things we’d be doing is CATCHING UP. This is imo the first GREAT MISSED OPPORTUNITY, having her as the import character would have killed two birds with one stone. She gets a proper introduction, we get to know how she thinks on different issues and talk about her past.
Then discuss the matter of Ciri, what it means to them, throw some flashback to their iconic scenes. Make the player care. And also, make us understand the history between the two. All the good and all the bad. Throw some semi steamy scene if your choices were to her liking and then off we go to Velen.
Regarding the topics we get to discuss with Yen, the different options could lead to her take on worldly issues, or conversation about her/our past.
roche vs iorveth could touch the subject of discrimination, our role in the first game maybe.
Arian La vallete on political intrigue / our time bodyguarding for Foltest
saving Letho could lead to a discussion on her first days upon being freed.
Sile could lead to her opinions on the lodge
Triss rescue would open pandora's box. (and once things are calmed down discuss the issue of friends vs great causes)
A lot of things could have been better regarding continuity from Witcher 2. A conversation with Yen (even if you imported a save) would have made the choices you made atleast feel acknowledged.