This is the current behaviour of LabVIEW: I develop a LabVIEW application and it is my fault to not completely figure out which connectors I do have to implement to perform a function by calling a subVI. It becomes later difficult to make a change on that. The process is, I have to add those inputs, which I forgot to the subVIs panel and to the connector pane. I choose save and close (STR+W) and continue with connecting the wire to the corresponding VI on the Main VI.This is difficult as one needs the right type of control on the subVIs pane. My way is to create a constant and copy it to the subVI, then choosing to make the constant a control.
My idea is, to finish those two actions (putting a control on the panel and wire it with connector pane) by a simple click to a "free" connector pane terminal. When the mouse covers the SubVI and the user has choosen the connect tool, the user presses a key and then the terminal of the subVI becomes visible. You only need to do one more click and the wire is connected appropriately. On the panel of the subVI the control was build without opening it.
Additional: By this method it should be also possible to connect to a terminal, which is currentrly not free but "is wired" to a control, and replace it with the new datatype of the current wire.
