[reificator]

ServiceWorker vs Application Cache, I'll take ServiceWorker every time.

When you're talking about a low level primitive, boilerplate is preferable. It means you have options. You can throw Polymer or any other library on top and get what you want out of the standard, while someone else can come with different requirements and not be boxed in by your own.

If you can distill your argument to one sentence, it probably isn't blindly applicable to all circumstances. Yes that was one sentence.

[dmitriid]

DOM APIs (which Custom Elements are) are not really "low-level". They are low-level in the sense that they are cumbersome imperative boilerplate compared to basically anything else on the platform.

The main problem with boilerplate in DOM APIs is not that they are "low-level". It's that w3c never makes any effort to address the developer experience when using these APIs.

This is why you end up writing 10 lines of code just to sync properties and attributes in Custom Elements where a single `{reflectToAttributes: true}` would suffice and remain low-level.

This is the problem across the board, not just Custom Elements. The goal of a platform (and the web is a platform) isn't just to provide cumbersome low-level APIs, but also a set of sane defaults and a set of APIs that address the majority of a developer's needs. w3c can barely provide the former, and has never been able to provide the latter.