in addition to that, would be nice if we can adjust romance option for certain characters so if you accidentally broke up with someone in the past you can change it back to have their romance back in order to view alternate endings instead of play from the beginning again.
I think it would involve changing some values in game files instead of modding the game. What I request existed in other Bioware games in the past such as Neverwinter Nights 2, you can adjust romance status (i.e. to add or remove love relationship per party member) with group members using console commands. Perhaps this game has it too but no one has discovered the right command for it yet.