1. Keys didn't glitter before. At best you would just know the house/location where they should be located. Also for millers key, first I found it by chance. Then I saw that the 2 drunks outside the town bar mention its location after everyone returns to the bar.
2. There is a difference in changing the random/luck factor and PROVIDING legendary loot since the get go. A lot of time was spent in trying to reload a save game to get a better loot in D2 (even with the quicksave bug, which was part of the fun). Had to get a matching axe for my dual wield
