Here are links to a few thought provoking articles about the situation with Interface Design in OSS projects. They touch on many of the issues raised in this previous thread and may provide deeper insight into a few.... in posting these links here its not my intention to offend, annoy or unduly complicate anyones lives, just to shed some light on something I feel is important for the F/OSS community as a whole, and especially Moodle which I rate highly, just as it is.
I hope they provide a good backdrop to further debate here about possibilities for future Open User Interface development... above all, how to make it really happen for Moodle where it is needed.... can we take this knowledge and forge a practical approach from it?
The Usability of Open Source Software David M. Nichols and Michael B. Twidale
Fundamental issues with open source software development Michelle Levesque
Why free software usability tends to..... Matthew Thomas