Google could - and certainly has (even with the latest Pixel C) - do much worse than RemixOS for the desktop. If they can't come up with any other way to make Android look good on the desktop, it should at least acquire RemixOS and go from there.

I'm not a fan of the whole "Android apps inside Chrome OS" idea - it seems like a very roundabout and complex way to achieve what Android already can by itself - run over a million Android apps. However, if it does make an Android Wear-like Android for PCs, I do think Google should retain all control, so it can update Android for PCs just as easily as it can do with ChromeOS (or as Microsoft can do with Windows). Google should in no way repeat the update failure of Android on smartphones.