Main dissapointment is, I think you ripped off the admin cp, due to the fact it looks like Matt Mecham's ideal admin cp for Invision Power Board. Only difference is, you only used CSS through out the admin.
I do not think our designer agree to this.
Actually, we never had a deep look to the ibp admin panel, i for one only saw a screenshot once a few years back.
I'm going to wait for final release, and go through your code to see how many security issues and exploits I can find, with in a couple of hours.
Would be nice if you would report them too... maybe we should do the same and give NeoBB a tiny internal audit... more eyes see more.