No game is born with the aim of playing the final part better, 1- because otherwise you ruin the initial game (you do not know how many chapters can have a game), 2- because it simply does not make sense! In fact I think the first two maps were studied in one way, Barbiron in another, in fact it is very ugly, few details, etc.!
Then, when I hear ".. it's too much work ..", of what? Then you want to win easy, the maximum levels must be earned, as well as gold or pieces of armor!
The problem is that in the initial maps we are few, because few are the players! so the game is boring with a few players on the first maps!!