- The callback hell is easily avoidable with promises, and promises usually interoperate with callbacks using the node callback convention very well.

- If you seek to solve the type safety problem of JavaScript, CoffeeScript is absolutely the worst possible choice. CoffeeScript is to JavaScript what stenography is to typing. TypeScript might be a better choice.

- npm is not the problem, the npm package ecosystem is.

- Scaling is not painful. You can scale horizontally as long as you are not doing something dumb like blocking your event loop.

I think you didn't address the real problems node has.