- Lack of speed? - speed is equal to vue/react in dbmon benchmarks (even with polyfills).
- Tooling is quite good, polymer-cli, gulp, grunt support to name the most common stuff.
- https://www.webcomponents.org/elements - Thats a vibrant ecosystem :-) Big enterprises like ING, IBM, USAToday participate and release their components. (7k developers on slack channel)
- Insane data model? I work with my polymer elements same as I do with angular and react components. If in doubt just use redux/uniflow-polymer.
I get that you might not like it, but the issues you raised here are hardly valid (unless you used 0.5 or fresh 1.0)
Can you tell me anything in particular lacking in our tooling? I know we have a lot of issues open, and a long way to go, of course, but if there's something specific it'd be helpful.
And the lack of great tooling.
And the lack of a large ecosystem.
And the insane data model.
I regret every moment I used Polymer.