A good story, no action, good voice-actors, music that fitts the game,
you can save when you want, no long diary entries, non-linear would be nice
(in certain games even preferable, when you want to explore
a beautifull environment), but no problem when it's linear in a detective.
I would love a game that lets you interact with all the persons
you meet, and their reactions change according to how you act youreself.
Quality puzzles of course, but they have to be logic,
do not want hours spending on a puzzle that
afterwards turned out to