I'm the typical backend guy, so I'm all about routes, models, and logic.
That said, the real big wish I have is that this scaffolding/cli tool not become a required tool (remembering RoR). Loopback's yeoman-based scaffolding does this well as it isn't a requirement but can be a good crutch getting things laid out at the start (really fast prototyping); and doesn't become a major annoyance down the road as the codebase grows in size, complexity (and team).