vbulleting and phpbb have member private mail blocking possible
This sounds strange... vBulletin has huge budget and investments and they have team of programmers which consists not from the one person like me, who is developing and supporting this add-on for a food money. If you would like to go to the bugs and whistles bushes of phpBB, which is coded by everybody who thinks he's a coder, you are welcome as well.
What "other small" do you mean? Show me the exact examples, else it has no meaning.
What we have for miniBB is: if you would like something to see, you are welcomed to invest a bit and pay for my work. In most cases this "feature" like blocking emails doesn't mean a lot for most of the sites, that's why I don't see many sense in adding new bugs to the program which works stable, because it is selling OK also without this addition.
However I think I will implement this request soon, since I already got contacted by a person who would like to see this feature on his forums. I think this is what I could call a "real business offer". In opposite to yours, which sounds more like wining thus without "giving to get" knowledge.
And finally... where do you want to download - WHAT?