The Mopar appearance package seems like fluff. Attractive fluff, and cool if you have the free $$, but doesn't seem like it would be a priority. Any one item you couldn't live without you could always get from the Mopar catalog.
Super Track Pack sounds cool, so I did a little searching:
From
http://2010dodgechallenger.com/:
Super Track Pack for 2010 Challenger R/T:
20-inch Goodyear F1 Super Car tires
Front and Rear Nivomat Self-Leveling shock-absorbers
Larger rear stabilizer bar
3.06 Rear-Axle ratio
Performance Brake Linings
"ESP-off" Stability Calibration (for the enthusiast)
My comments:
I work with tires a lot: F1 Supercars are a good (not great, but good) performance tire. They'll run circles around the all-season tires that come on the R/T normally. Same tires as on the SRT.
Nivomat: cool non-electronic self leveling, but problematic if you plan to use lowering springs, bc they'll pump your ride height back up. (Unless they're doing something new that I haven't heard of)
Larger rear bar: fun, less understeer.
3.06: I think that's the regular rear end for the auto.
Perf. brakes: a good thing, but sometimes dustier
ESP-Off: the reason to get the package in my opinion.
Personally I'd just go stick shift, and you get most of the good stuff anyway, but I know in your case you specifically didn't want stick. The F1 tires will wear out fast, and can't do snow, but you can always replace with different when they're gone if you don't need the max performance.
Most of this stuff is easy performance bolt-ons, so the real reasons to do it are if you like the Nivomat or the ESP-off, or if the price is better than getting what you want separately.