I was under the impression it had a separate coil and shock, but I see you have a coil-over-shock setup. Your ride height is determined by the coil only.
The picture shows your lower control arm is not correct. I agree with you that it could have a bit more lift. That control arm should have a slight inclination in the opposite direction. But you can also see one of my points starting to play out, in that your steering Tierod is starting to gain a fair angle. Seems you have a steering rack setup, and not a steering box with draglink, so you can get away with a lot more angle.
The only way to get more lift out of that setup, is to see if you have an adjustment on the coil. They sometimes have an adjustment boss that turns to lift the carrier portion of the coil with a cam setup to lift or drop it. Or you will need to extend the coil-over mount with a bracket on the top or bottom.
I still have a concern that you are running your tyres off badly, and that the geometry of the top control arm is not right, which is affecting your camber. Would help if we could see the printout from the wheel alignment which you should have had done after a modification like this.
When you say that it drops the coil-over mount. I presume it does that on the top mount, as the bottom mount looks very standard to me. It would have been great if you had the before and after measurements of distances like the coil length. That way you could have checked to see if a 2" longer unit would have been enough.
**** Disclaimer****
If you don't have the know-how, please get someone to help you with what I am about to suggest. Do not drive the car with any modifications that you are not comfortable with, it could be dangerous...
Get a spacer in place at that mount I circled in red, and see how it affects your ride height. You can experiment without having to take it out on the road, so no heavy complicated engineering stuff at this point. We just want to see how the height reacts to a bigger mount which would lift the coil-over at this point. It would also be interesting to see how much droop you have on the suspension with and without the coil in place. I can't see where your bump stops are located, so can't say if they moved with the lift kit or not.
now i am more confused then ever. 
... thats where my problem is and thats whats eating my tires. 
