I like how Calypso is written. Getting laid with her seems to be hopeless at the moment but who knows how the game will process.
I feel she's the best character of the game (top in the Tier Alpha Trinity of her, Luna, Alex).
If I arrange everyone in order, it would be the following:
Tier Alpha
1) Calypso (best combination of personality, looks and power)
2) Luna & Alex (equal second place)
Tier Beta
3) Nova & Penelope (equal third place, but tier below trinity)
4) Nancy (below Nova & Penelope, but still in same tier as them)
Tier Gamma
5) Dalia (so far, her arc hasn't been as interesting as girls in Tier Alpha and Beta, even though there were instances that were a little bit amusing)
6) Annie (wouldn't consider her a bad character, yet her arc and her as a character feels too vanilla especially compared to others)
Really hope Calypso becomes an unlockable LI in the future.