What is your top request for the Web Platform?

What is missing that would help to create compelling webapps? What do you see in other application platforms that the web should have? What feature should be added, or spec created, that would significantly improve what you could build on the web?

https://www.google.com/moderator/#16/e=200e26

Please submit your requests above. I asked this a year ago ( http://paulirish.com/2011/what-feature-would-improve-the-web/ ) but it's time to get some new ideas. BIG ideas!
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