Yes please, let's chat about spawn Astarion for a bit.

I feel that his romanced epilogue is missing the middle portion. That you have been living together for six month isn't really an issue, the other companions also have lines that cover this time and give you some info about it. With Shart, for example, the PC discusses who tells which stories so that they don't bore their friends by telling the same tales. That's a cute way to insert some stories.

The player character in Astarion's romance is in general not the most emotionally warm creature, unfortunately. There is a "you are the person I love, the person I want" during the graveyard scene, but in general there is little opportunity to tell him that he, as a spawn is awesome and that you are his greatest fan - which is a pity.