ChrisK,
The I guess it remains to be seen whether there will be interest in creating aftermarket parts for the new RL. I agree that the best bet will be via the TL 'cos I still don't believe that there will be any significant demand from the RL. Looking under the hood, there ain't much room to fit a supercharger in there
As for times, high 14s just wouldn't be fast enough for me to get interested in doing any modding, but I must admit that it would be cool to try the paddle shifters on a 1/4 mile...not sure if they would be faster than a real stick and power shifts.
SH-AWD on the track would also be interesting, but I would probably swap out the springs first. I think it would have been great for the new RL to offer adjustable suspension, where it could offer multiple modes...softer for normal driving and harder for agressive driving...ah well...
Cheers
Pete