If you're using anything but the minimap to do anything more than just minorly adjust your camera you are doing something seriously wrong. Scrolling across an entire map, regardless of how you do it, is incredibly slow and inefficient.
Thanks for your replies Inverse, I am really buying what you're selling

When I'm back from vacation, I'm going to ditch my WASD script (keeping middle click for tactical map). I'm really looking to improve my game in this case, I've had my fun messing about with my friends but I decided that I want to start taking this seriously and at least break into the top 200 in 1v1.
If it's okay, could I ask a couple of questions about your specific preferences?
What sensitivity do you have on your mouse, and what scroll-speed sensitivity do you have?
Are gridkeys more efficient than regular hotkeys? (I'm finding I like having 'T' as my retreat for infantry as well as reverse for tanks, the similar ideas makes it easier to remember for me)
How much do you use the tactical map? I've noticed from his stream that Shadowada uses it quite a bit; would you recommend it?
Do you use control groups often? If so, what are your preferences for the binds? I'd really like to try using them (basically I only use them for a sniper or a tank), but I often end up forgetting about them mid-match.
Also in regards to control groups; do you use a script so you can use more control groups without having to move your left hand away from numbers 1-5?
Appreciate it!