So, this was originally going to be a topic comparing the top 10 plugins of various forum software and comparing it directly to NodeBB, but after looking through the sorts of things other forum software is pushing out, I've scrapped that idea. (You can see the notes I made here, I wouldn't bother, it's almost certainly shi...anyway)
So instead of that, I had a different idea, rather than the fantastic plugin developers making plugins and things that they/we think might be useful and only ever get a few downloads (I'm guilty of a few of them), we could bounce some features around that could maybe be pushed into a working plugin at some point. There's loads in the forums that people have mentioned "could be a plugin" @julian is definitely guilty of that one
, but I doubt they'll be found again. So, why not put them here, this would then maybe give the plugin devs something to work towards, rather than just building for the sake of building them, and gives us a "goal".
Now I don't want anyone thinking that if a plugin idea is put here, that it will be built and available to you within 24 hours, that won't happen, so there's no point repeating the same plugin over and over and asking on progress etc. This is more for ideas than requests. If you've got the $$$ and need a plugin post haste, I'm sure the guys at sales [at] nodebb.org will be able to help out.
TL;DR, post ideas for plugins here and maybe someday it may materialise into a plugin. Also I do hope this was ok to post, I don't want to intrude as some false spokesperson, but I'm out of plugin ideas, so you know., I need the ideas. 
###Plugin Ideas###
Follow topics you reply to automatically - Implemented
- OP Mod status for that topic
- Email domain blacklist
Disable RSS (could be done in Nginx I believe) - Implemented
- XMPP support for chat
- Custom User Fields. (Favourite Cheese etc)
- Form to Post (potentially external)
- Show Users that viewed topic
- Show Users that liked posts - 0.5.1
- Best Answer
- Forum Subscriptions
- Soundcloud SSO
- Mixcloud SSO