I love steam, except one thing:
I'm forced to install all my games in the same directory. Let me explain why:
I have 2 different storage volumes: a 500 gb hard drive, used to store data and play games that require a less powerful system (This is where STEAM is installed)
A 140gb RAID0 between two Raptor drives, where windows is installed, along with the more demanding games.
Sadly, steam forces me to put all my games in the same directory, so games like crysis, DA:O, and others, I buy either boxed or from D2D