I write D fulltime for my small company, published a framework that 4 other small companies use (or have used). D is really nice for the small ISV, but is also

I write D fulltime for my small company, published a framework that 4 other small companies use (or have used). D is really nice for the small ISV, but is also prepared to handle massive codebases (deprecated, packages, gradual typechecks, clear deprecation policies).