That would be great!
NXT support in ROS is very outdated :(
Latest ROS distro supported I think is electric (current is hydro, 3 ages newer).
Also, the ROS node uses version 1 of NXT Python. It should be upgraded to 2.
I can also help of course.
At the moment I'm working on supporting the sensors I have (Dexter Industries dIMU and dCompass, HiTechnic IRLink and Touch Mux).