[vernie]

Well you certainly can't raise a stink after it's in the standard.

[Touche]

My point is, portal isn't "an iframe without all the security protections." portal is a demo of animating between pages. What it becomes from there is completely flexible.

[skymt]

Animation isn't the point of the portal element, it's to allow cross-site navigation to an embedded page without reloading.

[bzbarsky]

Things are not "flexible" once they have been shipped on by default, typically. Changing behavior or removing at that point becomes very hard, requiring usage measurements, etc.

[Touche]

This is not on by default.

[bzbarsky]

Yes, I am aware. But that's related to how happy Google is with it, not to whether it's standardized in any way.