Security Feature Suggestion: "Delete Password" on exit?

[Alex K. Angelopoulos]

I've been looking at VNC in remote assistance roles recently, and it has 
occurred to me that for that specific role, it might be helpful if VNC could 
be set to either delete the registry keys for passwords on exit or to never 
save the password at all.

I find myself taken with the idea, but I can also see how this could be a 
pain in the rear for a standard install even if done carefully - if it's 
possible to wade through the issues of multiple keys where the password may 
be specified, it could still be very confusing to people if this "setting" 
were configured and they weren't aware of it.

Any general reactions to the idea, though?