I wish more effort was made by the NIM team to focus on web development as a use for NIM.
Frameworks/simplifications are better left to the broader community that knows their own web-needs. It took many years for things like Django for Python or Rails for Ruby to appear. Even now, those are not part of the respective core languages, but external projects.
Anyway, it's open source. Instead of just wishing for more effort, adding your own effort might be even better! :-)