The code is different and has different choices with different consequences, compared to the old version.
That solution you propose would only work in a linear game, but in LP you can progress in the order you want, with the girls you want and there are some choices that remain between save games (even if you start a new game, that choice persists). Less than 5% of the total content is mandatory and it would be a titanic job to track all that progress for each player's save game.
However, there is a complete save file (with standard choices) in the discord community, if you don't want to start over.