[lewisl9029]

jspm can actually remove a lot of the friction you mentioned:

1. seamless ES6 transpilation at runtime (no build steps needed)

2. load libraries in any package format as ES6 modules (Globals, CommonJS, AMD, ES6) from any source (local repo, Github, NPM)

3. no need for injection (you can import css and html programmatically using extensions)

It does introduce some friction of its own due to it being a relatively new project, but not enough to offset all the benefits it brings, in my experience.