I keep an eye on python web frameworks. Here at Carleton a pilot has just begun:
http://www2.carleton.ca/ccs/this-month-ccs/october-2010/learning-management-system-trials-have-begun/ Looking at the LMS's you mention (BB, D2L, Moodle). I don't work in the LMS area but would like to see python used more. To that end, I think the web development tools are just beginning to mature to where client-server tools were 10yrs ago, i.e. with ui builders & widget toolkits. And still lots of impedance mismatch - I'd rather work in python than javascript. But I'd like to help work on a python lms, time allowing! So one thing needed would be mechanism to export/import btwn systems.