That might be unpopular here but when they already change the Triss content they should maybe already challenge the player a bit more without lettting them (and Triss) coming off all too well.
By romancing Triss Geralt is destroying his family. Him, Ciri and Yen, that was a family. Father, mother and daughter. They were happy together and at the end of the books it seemed like their relationship was kind of "right" and "fitting" for the first time ever probably. The events and Ciri bound them together even stronger than destiny ever could.
Geralt lost his memory and slowly recovered it during TW2. At the beginning of TW3 he knows everything what happened again. He must know that him, Yen and Ciri were family. Choosing Triss instead and ripping the family apart shouldn't be an all happy thing. It should come with remorse and doubts and Geralt should feel bad about it no matter what. And there should be clear and open tension, maybe even hostility between Yen and Triss and also between Yen and Geralt. The game is way too soft with Geralt (and the player) if you go down the Triss route. Yen would never forgive that. Ciri would never forgive that. For Ciri Geralt and Yen are her parents. In her eyes they are family. Triss is an intruder who used seized the opportunity to seduce Geralt while he was weak and vulnerable. She kept him in the dark, risking that his family breaks apart and Ciri might be unhappy. And that is something Geralt shouldn't be able to forgive.
So you see, going to romance Triss with Geralt's full memory back should be a lot more troublesome. I don't say impossible, but way more troublesome than it is. Romancing Triss is like causing trouble on purpose and it should show, both internally and externally. Triss is no Disney princess and romancing her shouldn't be a cakewalk without any bigger troubles. That would just ignore the complex relationships between the involved persons and their complex characters and motivations.
If denying Ciri the chance to destroy Avallac'h's lab is causing psychological trouble to her up to a point that she becomes suicidal, romancing Triss and destroying Ciri's family should be even way more troublesome for her. I mean, CDPR seems to like puzzle choices with clear right and wrong answers. Choosing Triss and not Yennefer seems like a pretty bad choice for me in the quest for improving Ciri's self-confidence and self-assurance. Only that this decision should have a way bigger effect than any situation in the game that leads to different endings...
