Aftermarket decks will soon be Extinct
I agree that many of today's aftermarket decks are flashy, gaudy and difficult to use. I think it's because the manufacturers are under such pressure to churn out new models every year, and the market has shrunk since A) Many vehicles integrate the factory radio into their instrument panel B) Many people Lease C) Many kids don't want to hassle with a new radio, they just hook up their iPhone to the Aux-In. In high school I got interested in car stereos, and started tearing car interiors apart at age 16. I eventually became an automotive engineer, and at age 38 I'm still tearing cars apart installing LCD screens, DVD players, USB ports, etc. It is a very creative hobby. Many kids today have no interest in this kind of hands-on activity, and therefore might not be inspired to pursue any of the careers that this can lead to.
I think the aftermarket manufacturers suffer from the need to introduce new models every year, and they sell so few of each model that they can't justify the software development time required to do it right. Remember in the early 90's, when you could customize the illumination to match your dash? Now I have a Kenwood that is constantly churning through the entire rainbow, and your can't stop it! And I have a Pioneer w/ 7" display, and out of 12 select-able screen options, only ONE displays the time. This is pathetic. I've got a JVC DVD player (single-DIN, no touch-screen) that does what it's supposed to without being flashy and dis-orienting, and I have transplanted it to qty(5) vehicles since 2004.
Soon this will all be moot, because NHTSA will require all carmakers to include back-up cameras, and in-dash touchscreens will be mandatory. At that point, the 'guts' of the radio will be moved elsewhere, and there will be no space behind the touchscreen to install ANYTHING (this is very valuable space in the dash). Customization will then become a very, very niche market, and the commoditization of the automobile will follow.