Edit to my anon author: I am SO sorry I never made this visible! Please feel free to ignore everything here, since it didn’t get posted until way late. Trust me, I’m so very easy to please with any of these pairings 🙂
I usually have a really strong squick around non-con, but in the case of Death Knights, part of the thing I LOVE about them is that they’re always subject to the whispers of the Lich King (Arthas or Bolvar, doesn’t matter. A benevolent mind-controller is still a mind-controller!) If you have any interest in exploring the tension between what Koltira and Thassarian feel for each other, and the demands/expectations of their Master, that would be lovely. Especially something where the boys might want to be kind/loving/romantic/consensual with each other, but the mind-control injunction to cause pain/harm/trauma/heartbreak is something that is constantly causing tension and making them act other than they would (or having to fight against it/understand).
I don’t know if I articulated that very well, but those are my fuzzy thoughts.
In this case, the whole violence/non-con thing would really not work for me, and non-con in particular would fell squicky and totally out-of-character.
Mostly, I want more banter and adventure-avoidance. However, if you want to give me backstory, or have them get dragged unwilling into an adventure, that could be a lot of fun. Basically, I see them as similar to Vladimir and Estragon from Waiting for Godot, or Rosenkrantz and Guildenstern from R&G are Dead – that is… more commenting on the world around them and only participating unwillingly. So yeah, they might be a good pairing for snapshot interactions, rather than a fully-developed story.
But of course, Matthias Shaw can’t let that happen. That is a recipe for epic, tragic conflict.
Bonus points for VanCleef kicking Wrynn in the junk, whether actually or symbolically.