I can't speak for anyone else, of course, but I don't want to work on OS3.1 any more than I would want to work on, for example, OS2.1. Not even the official version let alone some clone of it.
We have OS3.9, it is pointless to work on something that even when perfected will not implement OS3.9 features. I would not want to throw out all 3.5/3.9/BB1-4 enhancements.
