Oh yes for the twins. And daddy Thancred. But I think we've exhausted all potential Urianger has. Ever since ARR his role was being criptic and hiding stuff. Also as much as I like our hot catgirl, Y'shtola coming back from death/near death got old in Stormblood. And Lyse got to go. The've pulled the "I'm not really Yda" trick, but her character stayed being the dumb blonde who punches things. She got a promotion she didn't earn but that's it. If they aren't doing anything of worth with her character it would be better to euthanize her.
Hell I think I will make a list on my blog for the main characters and how likely/useful their deaths would be to the story.
On the WoW side though you just now that you need to kill them or they will shove them into every story even if you are tired of them.
I think that is why Legion worked so well. Bane was not present at all, Jaine threw a tantrum and went offscreen, Sylvanas was busy hunting Genn, Thrall was moping in the corner due to loosing the Doomhammer and Anduin was mourning his faither.
So you where doing the war campaign with everyone else.