It's a shame then that Google are moving away from ChromeOS in favor of Android. This also explains the improvements to desktop mode in the latest Android betas.
That said... if Google wants to fold ChromeOS into Android, I think they'll have to make Android fully supported on x86 as a first-class platform (because most Chromebooks are x86). And if they do that, they should have little problem making a... Android Flex or whatever you'd call it that boots on normal PC hardware just like ChromeOS Flex does today and fills the same role.
In any case, except for shared objects written with the NDK, the actual CPU hardly matters, even across ARM there is enough variation.
If similar to ChromeOS it is directly updated by Google then it will be a huge win for all computer users. No pain from OEM. I mean some Gemini crap from Google but that is tolerable.