I usually like my Bezier curve connectors to be 3pts thick with the control points not gluable. These are not the program's defaults.
So if I create a new connector, I almost always have to edit those properties. As a workaround, I sometimes copy an existing connector and paste it, but that workaround is not always desirable, and sometimes I forget to use that technique.

Similarly for other connectors, I usually prefer different properties for new objects. The ability to manage the default properties would be sweet.