Smart Valve

[Stephan Moenninghoff 163]

I really like having the Valve but I needs it to be smarter.

1. Could an option be added that portions of networks joining after the Valve are not affected? The Valve currently disables too much and could be used much more often if this was possible:
   
   In this case I want the dialog to pop up only if the valve before it has been enabled. Currently, the Valve kills my entire network downstram of it. Is that necessary?
2. Could the Valve please also disable controls in the OIP? If a control comes after a Valve, this would be an elegant way of hiding it. 

Thank you!