Camera Rants: Why don't camera makers make a hybrid?

This is the start of a new series called "Camera Rants". I will rant about Camera features that are lacking.

Why don't camera makers make a hybrid of SLRs and viewfinder digicams? Here's what my ideal hybrid would have:

• 6-7 megapixel large CCD/CMOS sensor - good pictures at ISO 800.
  
• Interchangeable lenses using a new format, designed for viewfinder digicams.
• EVF technology with at least 400,000 pixels and dioptric adjustment. (Electronic Viewfinder)
• 2.5" LCD that has live preview, aperture preview (like aperture lock on some SLRs)
  
• Thumbwheels - two, set to ISO and exposure comp/Aperture/Shutter (in P/AV/TV respectively)
  
• Flash - Hot Shoe, Powerful internal
• RAW capability
• Movie Mode - MPEG-4, 640x480x30.
• Zoom- 6x.
  
• CF card slot, included in box: one SDHC/SD/MMC multi adapter and one miniSD adapter.
  

A smaller version would use one 6-7mp with a good CCD as before, but would have a fixed lens, one thumbwheel, no hot shoe (External connector port though), and no MPEG-4 movie mode, plus a SDHC slot instead of the legacy compatible and slightly higher capacity supporting CompactFlash.
This would fix most of the problems with compact digicams, but without the complexities of SLR hardware, which must cost at least $75 in "consumer price" to implement, counting the SLR-live-preview function.
Plus, It would give movie mode, good LCD, EVF, and ultra-zoom functions to a truly high-end camera. And it would be somewhat smaller, a lot smaller without interchangeable lenses. Why doesn't Canon do this?