Starting over without it, the main thing I miss from the mod is the warning to hold off on certain events until you have a particular stat over a particular threshold to see everything (e.g. the events where you can convince one of the girls to do something risque in public if you've gotten her exhibitionism high enough).
But all that requires is that you follow the advice of Runey and dozens of others to build up available stats until key characteristics are achieved, mainly loyalty/affection, sluttiness, exhibitionism and submissiveness. It's impossible to miss the subtle scene differences if you follow this advice and most of the girls need to have these characteristics to progress.
I've played the game before the current info panels, with the current info panels and with a mod, and there's really nothing the mod adds that isn't in the game. The mods add a slight amount of specificity but also add delays waiting for them to be released and the potential for errors. I've read about people waiting for months to for mods to be released and that strikes me as totally avoidable.
And finally, people begging for mods are perhaps overlooking that a person, with a life and a job, needs to spend a lot of time mapping out the logic in this game, create menus, perform testing - none of which is easy and all for...what? See a precise threshold? No-one will miss anything if they read the info screens, follow the hints and interact with the girls, so what's the point?