Thanks for addressing this specific issue (and hey, Hixie!) Obviously, I don't know much about the APIs so I'll take your word for it.

I guess my first objection (doesn't unify web development) stands, but that can be addressed in future (and presemably Dart will work just dandy with Web Assembly).

I assume my other objection can be addressed by simply building layouts directly and not using the autolayout stuff if you don't want.