Thanks for the responses and advice. A few updates:
- I did have a 4-wheel alignment after the work was completed
- I'm on non-RFTs. Michelin Pilot Sport A/S+ or Dunlop Wintersport 3D.
- I believe the bushings are still breaking in (softening)
- I'm happier than my initial post suggests
One of the things that helped was a test drive of a new Golf R last weekend. Suspension, handling and ride were nicely balanced. The clutch was sloppy and the shifter was vague with long throws. The engine was coarse and the turbo lag was annoying. Also, once on-boost the engine revs kept increasing without further guidance from my right foot. I guess that's from the very high 17-pound boost. I got back in my car and I was flat amazed at how smooth the engine is and the beautiful weighting and accuracy of the clutch and shifter. I know I shouldn't have been surprised but I suppose I needed a reminder!
So the bottom line is that I'm going be patient but will probably try the linear 2011+ OEM rear springs and perhaps a new set of OEM rear toe control arms.
Thanks again for your help.