So anyways, i made an account on here after finishing the game for this particular problem in the game. As far as story and quality goes, i believe the game is amazing, the only part i felt lacking was relevancy of choosing Triss as your romantic choice. I was really let down towards the end of the game and was so frustrated towards the end that i started searching online if other people felt the same and i found this thread.. There are many excellent suggestions here and i hope CDPR takes a notice and at least adds what they think is possilbe, if anything.
The main problems i found were my WTF moments:
1)Triss is not at KM when you get there but Yen is. This is fine, all that is needed is somone to mention something, like Vesimir saying " Triss sent a letter, saying she'll be arriving to the party late, she's finishing up some things in Kovir but she misses you. Good thing I saw it before Yen" or something like that.
2) When Triss gets to KM, theres no dialogue with her, even tho she was clearly pissed off after the Yen kiss, and rightfully so. But why is there no dialogue to talk about that situation? pretty odd since you just confessed your love to her not too long ago in Novigrad
3)In Skellige, obviously, shes worse than a random NPC walking around. All you get is a "well?"... WTF?
4) tying into that is the zero dialogue options before the battle that may be the last of your life, just a walk-by "good luck". and this is coming from the person you chose to spend the rest of your life with and confessed your love to? Just doesnt make sense.
Anyways in general it just seems like Triss was slapped in there last minute whether or not she was your romance choice and this is a shame for a game of this caliber, especially since this is supposed to be the end of Geralts story and it really needs some closure in this department
There's a lot of good suggestions on this thread and i really hope CDPR takes notice. I cant bring myself to do a second play-through not matter how badly i want to because I know the frustration and emptiness I'll feel when i pick Triss again, and I will

I'll pay money for more triss content! whether EE or expansions, we gotta make it happen