Definitely. Lillie could have been friends with Mrs. Talfryn (well, Lucrezia) -- she was a friendly sort herself, kind of pretty and demure and Antivan, with no other real friends to speak of when she arrived in Ferelden/Denerim. I think a backscene with young!Talfryn could be fun -- maybe sometime around when he's thinking about proposing to Lucy and getting her out of there? It could go a few ways, too, like maybe Lillie can either encourage him to go through with it, or be suspicious of him and wants to protect her friend. Depends entirely on how you see it! But that's at least one point in his life that's gone little explored or explained, siiiince Talfryn is the conservative type and hates admitting that his wife used to be a whore.
Aaand there will obviously be some scenage with Im! well, aside from that one post where he felt bad about calling Imenry a barbarian in his head.