I just read an interesting perspective about the Challenger interior from a Chrysler engineer in response to complaints about the lack of originality of the interior. He basically stated that in order to get the Challenger into production, existing components from other vehicles (like the Charger) had to be used to eliminate the need for time-consuming testing and recertifications. While there was an obvious savings, cost was not the primary factor in the ultimate design.
The bottom line guys, is that if you do not like the interior, don't blame the bean-counters- it is the Federal Government.