Ummm.
I can see lots of folks who have to do 30 - 60 mile commutes to work every day wanting the styling offered by the Challenger coupled with something that offers better fuel mileage than the hemi.
Also - As someone said, this ain't 1970 anymore. 6 cylinder engines are not necesarily the stodgy old low-RPM stump-pullers they used to be. I've driven both the V8 GT mustang as well as the 6 and I gotta say, the 6 is a suprisingly healthy little engine. Can't see why a V6 offered by chrysler would be any less engine.
The bottom line is that as much as people with deep pockets would like to keep it a specialty car, DC has to offer a mass-market version for guys like me to be able to afford the muscle version.
Otherwise, it's just gonna be another toy for the priviledged few. Like the viper.