The only reasons that I've seen a site proposal being closed for are "not a viable proposal" and "duplicate." Are there other close reasons? What are they?
- duplicate of proposal
This proposal covers the same ground as another proposal. New proposals should define a new subject space not already being considered.
- duplicate of site
This subject is already well-covered by a live Stack Exchange site. We generally do not split off subjects simply to give them their own space.
- poorly defined
This proposal does not clearly state who might use the site, or what questions would be on-topic.
- content violation
This proposal has high potential to violate the Stack Exchange Content Policy.
- not a viable proposal
This proposal will not result in a useful, productive, or viable Q&A site.
- non-English community
Unfortunately, we are not currently accepting proposals localized to other languages — See Internationalization 'State of the Stack'. If this changes, we will post an announcement here.
This proposal covers the same ground as another proposal; it would tend to drain audience from another Stack Exchange site.