In all the talk of graphical downgrades no one seems much preoccupied with 'why?'. Why build something and then proceed to tear it down, piece by piece, in the hope that ever more diminished expectations about the final product won't be severe enough to...
Always cut corners. Look for areas where you can do it but be careful not to drive off the edge of a table.
Don't drop an EMP blast when you don't have a clear run out of the group.
Fire a rocket only when you see a target ring before you.