Chrome OS Tablet?

So I have been hearing about this tablet recently that is supposed to release on Verizon at the end of this year on Black Friday. The tablet is going to run Chrome OS and is being manufactured by HTC. In the picture it looks almost identical to the iPad but that could change because it is of course, just a rendering. I guess we can assume it will have a capacitive touchscreen, bluetooth, Wi-Fi, and since it is on Verizon, will be on EVDO Rev.A. Would be nice if it has a camera or two including a front facing camera for web chat. Now I would assume to compete with the iPad they would want to have ADOBE FLASH and some sort of native video chat software.

My question is why continue with chrome OS why not just use Android and integrate some of the features that they want to see on the  Chrome OS?