Well, I only played the Haley solo so far, but as others mentioned, the story was already mostly wrapped up by this point. Could it have some more about plotlines that were abruptly cut off? Sure. But then again, the Klaus decision was never something that was intended to be pivotal, it was just for the players to "deal with it if they want to" - according to Ptolemy - so I didn't expect anything more out of it.
Could've been some mentions about it right, and the entire Mom never found out the truth about the situation is something I think should've been expanded, that had some more craft in it as well, the lack of wrap about that plotline is unsatisfying. The Haley 2 situation ties into this, given we had some choices about that as well. Also some of the girl storylines were just simply cut off, Diane and Alana for example, and if you choose not to pursue anything with a few, they just disappeared like they never existed which is obviously weird. The very end? A montage at best, nothing else was to said about it.
Other than these mostly smaller unresolved storylines, I did enjoy the game as a whole, the dynamic between Haley and the MC is something that could and should serve as a precedent for any brother-sister storyline, so far the only one managed to emulate it is Trouble in Paradise. It's not the best thing ever, but especially the first time I played it I was really taken by the game, so ultimately I don't have any serious complaints about it or the epilogues. It's definitely a way better ending that Personal Trainer or now the infamous Freeloading Family ever managed to scrape together.