[quote name='kak23']Replay value.[/QUOTE]
Bingo. There are very few games I actually will pre-order for that very reason. The only time I do pre-order, is when I think a game is an absolute can't miss and I know I will invest a lot of hours into it which include re playability.
The only games I've ever pre-ordered are Mass Effect 2, Red Dead Redemption, and now Fable III LE (first ever LE I've ever pre-ordered). The first two I still feel to this day were worth the $60 and change I spent (the current price drops are ridiculous, anyone that doesn't have the game can't go wrong at the current prices) and hoping I will be able to objectively say the same thing once I've played through Fable III.