I have not always used this control scheme. For over a decade, I was primarily a keyboard-only player and used the classic DOS controls. Over time, I realized using both the keyboard and mouse is a huge advantage, but I felt there's a lot of control options that I could do without, so I go with the following:
auto-aim: off
auto-run: on
Crosshair: On, and scaled all the way down so it is as small as it can be. I've found this is more useful for close and long range shots with auto-aim off.
Mouse (anything not shown here is not bound):
Keyboard (anything not shown is not bound):
I look forward to reading your replies, but please.. don't be one of those annoying fucks that just says "classic" or "WASD"... EXPLAIN yourself a bit.