@meetdilip: Yes, of course it depends on the different sites. It should be an optional, configurable feature. Since it seems to be not yet implemented in NodeBB, I woud like it to be considered a feature suggestion.
About choosing Discourse or NodeBB, Discourse has already very nice features like this self-moderation. However, for some other points that can be important depending on the site, NodeBB gives more options. For example, Discourse has explicitly discarded pagination as a possible option, therefore infinite scroll must be used in all cases. Also adamantly discarded are hierarchical categories, and only one level of subcategories is allowed in all cases.
On the other hand, NodeBB seems more open to give options for users' suggestions, such as optional pagination, unlimited subcategory levels, flexible theming, etc. So, this project probably will use NodeBB.
ahwayakchih already signed NodeBB Individual Contributor Assignment Agreement so hopefully by the end of the month we will try to migrate from IP.Board to NodeBB. We're moving it from old server to the new one so all other things have to be updated.
We're waiting for NodeBB 0.7 to be released and for UTF8 Converter in already great nodebb-plugin-import tool.