Of course, a hug would be the icing on the cake to crown the moment... Even better would be a kiss! Otherwise I thought: what would you say about a hand kiss? The TAV that takes Astarion's hand and kisses it as a sign of affection and devotion? A sort of reference at the night which Astarion transforms the TAV.
Yes, the hand kiss is beautiful! I'd love to support it! <3
This specific scenario is actually possible thanks to a Vampire Lord Astarion - Epilogue Party Affection Dialog mod on Nexus! Both kissing and hugging is possible.
Both kissing and hugging is possible. 
