If you can improve the UI/UE experience, it will be poplar.
Thanks for the feedback! Were there certain part of the UI that you did not like?
The more detail you can give us, the better we can focus our efforts to deliver something everybody will like.
The UI is the default bootstrap 2 theme. I think @psychobunny was planning on creating a new default theme for NodeBB. I wonder how progress is going on that.
We have plans to upgrade to bootstrap v3 but it will take some time as there are some major changes.