Yes this would be great. Fixes to official parts need to be sent to [email protected]. They need to go through the Parts Tracker, where the changes can be reviewed.
Of your suggested additional tweaks, I'm not sure about "type 5 line with missing or duplicate control points (degrade to normal line)"
Of your suggested additional tweaks, I'm not sure about "type 5 line with missing or duplicate control points (degrade to normal line)"
Chris (LDraw Parts Library Admin)