An easy way to keep track of quests and not have to take too many notes.
A bag of holding, a clock, a spell of reveal map.
A variety of monsters that don't become sweeping generalizations (like all the lady vamps in W&W).
Murphy's Ghost.

Full color maps.
A variety of environments.
Dungeons which are not so extremely dark (I'm really TIRED of dark, dark dungeons - there are so many other solutions)
More later!
Wyv