It would be amazing to have vector based lines that are elastic, that could be editable and moved around after sketching the initial path. For the ends and mid points of the lines should allow user to pick arrow heads, circles, squares, etc. As an end type option the ability to connect to an object or photo, so if you move that object the line stretches to the new location yet the line remains edible.

The line corners should have adjustable arcs or curves that could be tweaked.

I use this app to draw diagrams of audio visual setups, so the ability to add a graphic or image on the ends of the lines to represent diferent types of wires with specific plugs, like XLR, Ethernet, or HDMI to this proposed line tool would be very cool.

Thanks