Re: "all" on MemberList.aspx
If you need that consider implementing it. Its not a priority for me at the moment. I'm also not sure what the sql for that should look like. If you're basically saying it should return all users whose name doesn't begin with any of the AlphaPagerChars, that will be more difficult to implement than finding users whose name starts with a specific single character.
Seems a simpler solution is just add both numeric and alpha chars to the AlphaPagerChars in web.config