Those are good points but I think that what Google is positioning this browser as and what everyone is missing is to make a platform play.
They are creating a browser that can be an application launch platform for their own applications. Think Java Web Start or what applets were maybe supposed to do for Java Apps but never did.
Imagine this if Chrome can even grab a little bit of market share as a pobro (plain old browser) - yes I just made that up. In the future imagine how much better it can be for google to say oh you want to use our apps offline just grab chrome.
It makes much more sense than downloading a plugin for firefox or IE where they don't have development control or architectural freedom.
So this is why there is the lack of fanfare and other general publicity one would expect. They are trying to sneak a platform play in here and hope no-one will fully notice.