After-Market Car Audio Shortcomings

My perfect system would be this:

• Double DIN touch-screen controller
  
  
• Video out (to drive monitors in rear headrests)
  
  
• Navigation system that can be controlled from the touch-screen

It doesn’t seem like a terribly tall order, but I don’t think I have any options. Some stuff is close, but nothing is “complete”.

Alpine System

Pluses

• Touch screen is cool because it gives physical feedback, so it feels like you are hitting an actual button.
  
• iPod bridge would let you control basically an infinite amount of music without CDs.
  
• Independent video-out (for rear monitors).

Minuses

• Has no double-DIN option. Instead the monitor physically comes out of the deck when you turn the car on.
  
• Navigation system is controlled by a separate remote control, rather than the touch-screen (this is not only completely stupid, but it’s the deal breaker for me.).

Eclipse System

Pluses

• Double DIN touch-screen.
  
• AVX2494 has a built-in 20GB hard drive to store music.

Minuses

• has no external navigation system option (not even a non-touch screen one).
  
• No video out.

Can’t someone combine all the good stuff into one system?