Mr Ex, thanks for such a detailed post, a great read with some very helpful info, all much appreciated.
As for the Asker stylee presentation - Asker had better watch out, you'll be doing Asker better than he does himself! Ahem, you know what I mean

Your explanation of the pedal box is really useful. If you ever give up the night job! I'm sure, as you say, being indoctrinated with the Mk5 and Mk6 throttle response, I will be more than familiar with it, and coupled with the obvious improvement over my current drive, that should be enough to satisfy me, for a while anyway. And if, in time, I find myself wanting a more spontaneous response, and to lose the dead zone, there are options and I know who to ask.
Don't get me started on the R Line subject

......but I like your description of the R being an enigma. It brings back a memory from my school days, when my parents attended a parent's evening. On their return home I asked what my form teacher had said and the reply was "she said you were an enigma!" We still joke about it. So maybe the R and I are destined for each other, lol.
See, I liked the original Tallegedas very much and I understand what VW were trying to do with the Cadiz, but in diamond cut form, some of the presence has got lost along the way. I don't think Pretorias are girly either or weak looking as some do, in fact I like them for the reasons you state, the similarity to a lightweight motorsport wheel.
The Pro Nav is ridiculously expensive for what it is and if it hadn't have come up at a reduced price via the tech pack, I wouldn't have bothered, especially with the new MiB II screen now on the scene, but I know I'll love it. Every now and then I'll post a seductive pic of it just to feed your envy.
As for the quad pipes, having seen them in the flesh, I like them a lot, and the R has to show off just a little bit, doesn't it!