Runey, I was someone who used the mod when it was available, and while I don't particularly agree with a lot of the complaints — it's a much slower game requiring a lot more experimental clicking around without it, but that's not such a big deal — one particular enhancement was not only quite useful, but saved me from having to go back and replay things to experience content that was offered but not actually deliverable.
There was a beach event — I don't remember with who; probably Maria, but maybe Kali — in which I was able to
request a certain action, but couldn't actually
experience it because my affection and/or exhibitionism weren't high enough. Which wouldn't have been such an annoyance if the message telling me that wasn't was
well past the rollback limit, but it was. Which also meant that I had to go back to my second most recent save...and since I was playing as if content would fall naturally into the stat system, which is my default assumption while playing HH, I had to replay almost two full weeks.
I "solved" this by stopping the story and accumulating all available stats until they couldn't possibly hide a scene. That took...I want to say somewhere between five and twenty hours? I didn't actually time it. I wouldn't call that process enjoyable. But one feature the mod included, and there's a screenshot of it somewhere above, was revealing that "beach event 3 for Maria" required X exhibition points, which I didn't yet have. If I'd known that, I wouldn't have been caught by the stat gate.
That sort of functionality doesn't diminish the gameplay — I still have to accumulate the necessary points if I want the scene — but it stops me from being caught out by a stat gate I had no other way of knowing about. And I didn't; there was no indication of which stat (or both) I needed to raise, nor what the threshold was, until the game denied me the ending of the scene. Honestly, I
still don't know which stat I needed to raise. I just replayed until whichever character was maxed out by any reasonable standard, and then I went back to the beach.
I don't need giant flashing arrows pointing me to the next crucial scene; the doors aren't hard to click on, and occasionally poking around the hotel can be fun. But this, to me, seems like an actual gameplay flaw. It doesn't need the mod to be improved, though; it could just be fixed by not letting me get to a scene that Character X will say she's up for and then decide that she won't do long after I can rollback.
(And yes, I understand that you wish I could remember which scene it was so I could fix it. Sorry, it was a long time ago. Searching for something akin to "she probably would've done it if her affection/exhibition stats were high enough" might ferret it out.)