Hi guys,
First of all, thank you for building into the future. Polymer is awesome, now I can picture a future where developing web apps is a pleasant thing.
Just wanted to share my opinion on how to name and import components. I know the convention is to name it like this: "/components/core-ajax/core-ajax.html" but it is so much easier to import when the name is just index.html, like this: "components/core-ajax/core-ajax.html" -- you can simply import "/components/core-ajax/" and it works... no need to repeat the component name in each import tag.