Are there any Camera Upgrade Parts available?

Regarding the Teardown of the iPad 2, are there higher resolution cameras (both front and rear facing) available that could be swapped out? I would consider this hardware upgrade to be the most realistic reason to open up the iPad 2 for the consumer (unless a part is broken and needs to be replaced.) The rear facing camera is shown as being disassembled down to a single piece (no wiring ribbons attached). There must be a comparable camera component with a higher resolution that could be used to replace this one. Possibly the newest (Spring 2011) iMac's "HD" front facing camera?

From what I can access, the rear cameras 720P resolution at 4:3 (1.33) ratio computes to (720x960=691200 or <0.7MP) The front facing camera is "VGA", meaning less than this, most likely being the same camera used in the iPod Touch.

I can assume the iPad 3 will have the newer iMac's "HD" camera installed and I consider the relatively low resolution cameras used in the iPad 2 to be the weakest link in its design.

The Motorola Xoom comes with a 5MP rear (including dual LED flash) and 2MP front camera combo...far exceeding that of the iPad 2.

If we could get a 5+MP rear facing and at least 2MP front facing replacement in the iPad 2, it would be an upgrade worthy of pulling out the heat gun.