I too can see the need for this .... so why not write your own code or pay for it to be implemented so that some royalty $$ goes to those that deserve it.
From its infancy to what it is today is because of the "open source project", we've all benefited from the dynamic momentum and the collective development in this community, and many thanks to Bruce & Al for kicking it off. Password protection does not feel like it has very much of that "MS spirit" to it that we all love ! ... so what was it about MS that attracted us all to it in the first place ??
I'm sure Bruce and Al may have thought about this at times as some folk have taken the code and schematics and rolled there own little deal with intent for financial gain and still looked for support ... fair suck of the sav boy's !!
Perhaps if Bruce, Al, James, Phil, Eric and Jean and all the others not mentioned who have contributed... now if they had not shared any of their efforts with the code where would it all be at ?
The whole MS world revolves around sharing !!