I hope I don't get accused of super bumping multiple threads tonight (really not so old threads or well not so old last post!)
On first impression, nodeBB was the ticket - without any of the technicals. It's all that matters.
It truly is all that matters. Since the majority of fourm users are not going to be technical and forum have there work cut out to drag people away from the twitters and face books of the world.
A forum can be deployed to any user base so it's application and audience is potentially as wide as you like and varied as you like, that you have to think about simple but not dumb Ui/UX and rely on the beauty of tradition, i.e. established and solid universal conventions that are universal but not afraid to push the envelope to enhance convention to the point it's at least feels innovate if not actually is.
Speed.
It's silky response. The fade out fade in transition was a genius choice, let me type that again GENIUS!
The Composer.
- It looks and is weighed better i.e. it's styled better, simple.
- It's not perfect, but it's one of the best out there.
The composer is the window to all content creation, the crucible of an entire forums everyday lifeforce. It's got to be good, it's got to always be trying to be better, by trying to be great. This is the interface that makes or breaks the user experience and thus a forum.
My UI/UX 2c:
Please consider making the composers upper top line a drag focus draggable area so it is not restricted to the black circle aligned to the left, that should really be centered (it took me too long to figure out) - it breaks a basic UI/UX expectation burned into our retinas at this point!