I know that I am fresh on these forums, and have only used LabView professionally the last half year, but nothing like this came up when searching, so perhaps it is is an idea worth mentioning:
Currently in labview: If we want to create a control from the terminal of a subvi or function we now have to left click -> create -> control. This action in itself require several seconds and very often a misclick produces an indicator or constant instead. (move mouse, select it, delete it, back to the terminal, left click, create, control)
My idea: Double clicking a terminal has today no useful action linked to it - so my idea is that when double clicking an input terminal a linked control will be created, and when double clicking an output terminal a linked indicator will be created.
Crtl + double click could create a constant: linked when clicking on a input, floating when clicking an output.
Ctrl+double click could also create a floating constant when used on wires 😉