Umm... without stating the obvious what is really more important the static height the car sits at or the quality of the ride?
Handling in it's simplist form = spring effectively absorbing the chassis movement, shock absorber effectively controlling the spring......
Lowering past 30~40mm on standard spec shocks usually reduces the total travel of suspension to less than is required meaning constantly bottoming out the shock, this will kill any shock in a super short time
, hence why Kings Super Lows are so often frowned upon as ineffective.
Cutting coils off springs, this has the same effect as increasing the springrate drastically, so where originally you had a set of springs with a springrate that was designed for a particular application you now have (probably) much harder springrates in the back then the front, hello serious oversteer
Also, front/rear height plays a big part in the weight distribution of the chassis, by having the rear slightly higher (have you ever noticed that virtually all factory sports type versions of cars have this trait over their lesser bread and butter models
) it helps effectively shift weight distribution during cornering and braking.
So to sum it up, really if you want an in the weeds look fork out for a fully adjustable set-up that is designed to go low and handle otherwise put up with a set-up that some very smart engineers designed to improve on the factory set-up. Jamex aren't to blame here, ignorance is