Personally, I find it fantastic that the core API and feature set are this stable across an entire rewrite of the framework's internals (moving to `Proxy` for change tracking, etc). Vue has every feature I need already.

Better than a poke in the eye with a sharp stick, aka compatibility break.

This is a major rewrite, so there are a lot of cool changes like much better performance, better ts support, separating the underlying parts of vue to do things like have better control of making things reactive, then the api change that everyone has been panicking about, use of proxies (the implications of which I can't remember now), etc.

I'm most excited about the reduction in bundle size and the ability to tree-shake the source.

It's not, this is just a few standout features that the website found compelling. I'm more excited about the massive performance improvement and typescript support.

because these are the things everyone comes in contact with and uses. there are indeed new features (in Vue 2 even) that have to do with dynamic Vue directives in the template and other three or fours features that unless you are writing an insanely reusable component or a Vue plugin, you would settle for a more orthodox and long way of doing things approach.