I just need one additional line in the dialogue, just like you too with Astarion. Someone needs Sazza. This will not make the game a trash heap, but will make it better - that's my opinion.
If honestly one single line of dialog and no other changes will actually make you happy. Hey then fine.
Though I just truly feel like it's a slippery slope because invariably people will fall in love with more and more characters and want more and more different types of romances. There are an extensive amount of visual novels out there. I don't have an issue with this being part of CRPGs but I think it should remain kind of compartmentalized.
The game should provide an opportunity to respond as I would if I were my character. If there is already a moment when Minthara says that my character must obey, gives orders, why can't I express my admiration for this? And let her know that I am delighted with her ideas.
Because romance scenes in CRPGs don't need that level of granularity, since they are primarily simulative. The same reason I can't inspect individual items quality and engage in a complex haggling minigame, trading just doesn't require that level of granularity. It's not real romance, it's not real bartering, there's a point where they need to step back.