My only real nag about your system is the large space between the monitors. If I go triple screen one day I would have to have smaller bezels than that to be happy with it.
IMHO triple head only makes sense for flying games where the bezels can easily be imagined as windshield pillars. Flying games is where they were first used if I'm not mistaken. Of course it is a matter of personal preference though. I suppose some will be looking to use one of those new NEC or Alienware curved screen DLP monitors in their custom cockpits for bezel free wrap around.
If I were to be talked into trying triple head and had money to burn though, I'd want to see if it were possible to use two 4:3s along side a 16:9. Then you would have a nice wide uninterrupted center screen and two peripheral screens. It would blend well for car racing games, like wide windshield pillars, and still offer peripheral view in shooters without bezels cluttering much of your forward view. Is this possible btw, triple head in a 4:316:94:3 config?