Advanced Customizability for Node Groups

I would love to be able to increase the usability of node groups through additional inputs like Checkboxes and Dropdown Menus. The latter as seen in shader nodes already.

My suggestion would be to integrate them just as value type:

• Checkbox - Boolean (0,1)

• Dropdown - Integer (1,2,3,4,...)

The Dropdown Menu would require adding a custom number of labels in the interface properties.

Of course there are severeal more features like these that could be added to the interface of node groups. I imagine these two being integratable quite easily. But then... I'm not a dev... so what do I know?