Ya, when the pit lords blow fire on you, you wouldn't be able to see...
But for it to be a FPS you would have to shoot something... bowazons would be the only char for this...but ya never know StarCraft:Ghost from the shots I see looks AWESOME so if blizz did ever think of keeping the Diablo series alive which from my POV is already dead the day of WoW relase.
-My thoughts...

XBL: GreatThanatos69