I think you fundamentally would need to make a decision as to whether your car is to be optimized for the track or not. If so, every pound matters, and creature comforts are a distant second. If not, for perceived performance on the street, a few pounds will make no difference, but depending on your biases, the Touring pack can make the car a lot more livable.
For me, the red leather combo in the Arctic Silver was so choice at the LAAS, it spoke for itself. Especially given that Alcantra is not an option.
I plan on configuring a cradle and using my iPod, and possibly XM, so the aux-in facilitates that greatly. Of course, upgrades are always a later possibility. MP3 capability is nice, but the iPod still has that beat by 1-2 orders of magnitude (10,000 songs!), not to mention one stop shopping, which is huge in my book. A deal maker? No, but beats the hell out of a cassette adapter or FM modulator. Like the Lotus philosophy - cleaner, simpler.
Sound deadening also is not a clincher, but we all probably underestimate the fatigue factor on long drives with high ambient noise levels. Only a bonus for me. I've no concern for still being able to appreciate the Toyota on high cam inches behind my head!
Stowage net is trivial. You want to haul stuff? Time for a truck.
I have to card swipe in to park in my lot at work. Hitting the down button while driving is much less of a PITA for something I do most everyday than interminable cranking. YMMV.
For those of us in the sunbelt with a black softtop in the summer on A/C, the added thermal insulation may help to keep the interior from approximating that of the sun. I forewent the hardtop since it is not quickly stowable in the 'boot'. THAT was a deal breaker.
My $0.02, Mike
Perfection is reached, not when there is no longer anything to add, but when there is no longer anything to take away.
- Antoine de Saint-Exupery