If your thread can be phrased as a question, it DEFINITELY doesn't belong in Development either, post in in the Nexus Q & A section. If you post it in Development it will be moved/closed and you may get an infraction or a ban.
There is only 1 exception, stock ROMs are allowed, as long as the link does not require a registration to download the ROM.
You may start planning a [DEV] topic in the General or Q & A section and then have it moved to the Android Development section once the actual Development has started.
☞ Development is classified as original work and/or documented edits and changes made to others work (with their permission) that makes it your own.
- Stock ROM dumps that are modified (deodexed, etc.) from the manufacturer's original intent and then repackaged together classifies as development.
- Kernel's and Recovery obviously classify as development as they are modified and compiled from source
Follow the FORUM RULES and the XDA MANTRA and we'll all get along and enjoy this community!
Thank you for your cooperation & thanks to jerdog for writing this wonderful explanation.