Excluding the performance issue, which largely seems to be confined to instances where polyfills are required, the cons don't seem so bad. The tooling will impr

Excluding the performance issue, which largely seems to be confined to instances where polyfills are required, the cons don't seem so bad. The tooling will improve as the library and community mature, and other problems are being addressed already by the looks of it. I've got a project in the pipeline for which I was planning to use Cycle.js, but I've always had a niggling interest in Polymer. What I'd like to know is whether Polymer offers any significant pros, because after consuming some of the docs the offer seems to be a better reimagining of ASP.NET WebForms. What are the benefits?