The best way someone who's not helping with the porting effort can help is to test and try out the package thoroughly with an eye towards bone-headed UI issues. Depending on how boneheaded things are, you could post as a bug in the SDM or as a thread for wider discussion in our OpenACS 4 design forum.
If you poke around there you'll see we've done some of this. In fact, the UI in one module - the Content Management System - is deemed so poor that we've opened a forum explicitly to discuss the issues. That forum's a bit dead at the moment due to our nose-to-the-grindstone efforts on OpenACS 4, but hopefully this makes it clear to you that we're serious.
