My fork of the plugin have a name: s4Members! Thanks for your suggestions!
Also I build a site, very simple at this time, with just a forum. Please everyone move to the new site and forum, as this one will die in 2 months. Bad news is that all the old threads with questions, problems, hacks and answers will be lost. Sorry, I find no way to get control over this (existing) site... So, the only solution I can see is to move to the new site and build them again. Also who can, please "harvest" all valuable info from this site and add to the new site. Meantime I work on the code of the new plugin.
I think with our efforts together we can save most of the info, and the plugin itself.