Hehe, good question Lefty...
OK, I'll dive in with my tuppence.
I start with standard settings, go for a spin and throw the car about in a fairly reckless manner. Laptimes are unimportant since I'm just getting a feel for the car's behaviour on the limit at this point.
Then armed with some info, I go to the settings and start fiddling. I hate understeer, so if a car has that as a primary feature, I start trying to dial it out before anything else:
Lower the suspension first, F/R by the same ammount initially.
F/R brake balance next to set the car up when I'm braking into a corner so it feels like the rear is just trying to break away as I turn in.
Camber and toe next to get a positive front end while mid-corner - usually a fair ammount of camber at the front with a small ammount of toe-out to make the steering more sensitive.
Go and test....
Feel the difference at this point then back to settings:
Make adjustments based on the 'new' front end
Beef up spring settings F/R if too much body roll/bounce with new camber/toe
Change damper settings to suit track characteristics with new spring settings if necessary. Same with anti-roll.
Go and test....
Back to settings and start to fiddle rear settings camber and toe based on what the rear is doing with a positive front end. If still understeering, reduce camber and toe-in, maybe introduce toe-out if very understeery. Personally, I like a rear end that feels like its always just about to break away while braking and turning in so I can control it more with throttle while exiting a corner.
Test... pay more attention to changes in the rear end based on throttle position. IE does it 'push' the front with trailing throttle or when accelerating, or does it start to break away under those conditions?
Settings... adjust rear suspension camber/toe with new info.
Adjust LSD power/braking settings if necessary. If pushing the front under power, reduce LSD power setting, if same while trailing throttle, reduce LSD braking setting - if opposite effect (ie oversteer) then increase LSD settings accordingly.
Test.... start to tidy the lap up and drive more smoothly, feeling the car's behaviour with new settings. Exit and adjust if necessary.. small adjustments based on the behaviour in the 4 key parts - braking, turning in, mid-corner, corner exit/acceleration.
That's about it, for what its worth. Probably doesn't help one bit... or even make sense.