This is basically exactly what I get out of writing web components. I get the best of every possible dimension I care about. I can write short neat little snippets of code that encapsulates my HTML, CSS and JavaScript in a single place. I can do it just using really simple CSS because it is all scope, I can actually build reusable components, I’m using the native web platform (though I do recommend lit-element as well) and I can do all using modern tooling and JS and all of the benefits that brings.