Oh yes, please, I've only played under patch 5 and 6!
If it's for fear of the lack of balance. I think it would be better to add a counterweight.
That is to say, adding a cinematic if: TAV/DU chooses to save the Tiefeflins + Astarion's approval is high enough then Astarion would more or less justify his immorality by his way of life over the last 200 years. And would propose, as an experiment, to try to see things more nicely.
It would be a good transition between the Astarion of Act 1 and the sometime gentler Astarion of Acts 2 and 3, with a bridge to friendship/romance in hero mode and without denying players in evil mode.
I hate waste!