Grease Pencil straight lines should be half-thickness

When I draw with the Grease Pencil I mostly draw freehand and use the Pressure Sensitivity of the stylus. However, using ALT+click to draw straight lines they come out at maximum thickness. I wish the ALT straight line drawing would find a better thickness, whihc I think should be 50% of whatever the scale is at the moment.

Also these thick straight lines are super hard to erase.