Today you can randomize the URL to the asset in the page. With bundles you can randomize the URL to the bundle, which then can randomize the URL to the asset.

Today you can randomize the URL to the asset in the page. With bundles you can randomize the URL to the bundle, which then can randomize the URL to the asset. It's one level of abstraction but if you can control the content of the bundle then you can also control the URL to that bundle, therefore there is no difference. If it's from a 3rd party then you can block the domain or bundle address. If it's 1st party then it's all the same abilities as today.