I don't think you'll get your wish.
It is quite difficult to get a BELIEVABLE romance done right in a video game. And that includes JRPG-style games where both characters involved have fixed personalities, fixed dialogue, and a fixed pacing and progression of the romance. As in, the writers need to worry about two characters (although that can go higher).
From what I can tell so far about D:OS 2, what we'll apparently have is romance options based on origin stories. There are going to be a bunch of these, so there will be a lot of possible stories which need to be written. There are a lot of variables. And this isn't a JRPG with cutscenes, so the progression of the romance won't be based on the pacing of the game, but on the pacing of the player.
