There are more people have that commented on the forums both in positive as in negative way. Technically the system is one of the most advanced you can find; it wouldn't make sense to drop it, but there is quite a bit you can do with the UI, i.e. http://www.virtualmin.com/forums/ has the same engine, but a totally different presentation.

I prefer the categorized Q&A over for example a threaded or UBB styled UI like PGD has though. If somebody has ideas, they are welcome though.