thanks so much, just to get it all straight; each game is considerably different from the other now so exploring both games has its value, however most of these changes were just for quality of life and story development, right?
Well, not exactly. There are a few storylines where your guess is correct. But on the other hand, one of the most important lines (about the cat girl Cassie) is radically changed, with only a few old fragments remaining. There are completely new storylines. Some of them are really additions to what was already there, but there are also much more significant ones that change the game as a whole.