Foremost, I made a mistake: the route should read ET-BT-CT-PT-WT and BT and CT are the points missing in the SD database. Sure, it is easy to create the two missing points as user waypoints. That's what I did just before start eyeballing at the SIA chart on an instuctor's phone. But you only do this if you know about the points. However, a clueless pilot doesn't know what he is missing and is probably inadverently touching/violating the CTA of Hyères. I fully understand your policy. But as this is the nicer of two routes Marseilles<->Cannes, I expect this to be a frequented one this summer. Maybe you could just include a link to the SIA file in the next chart update cycle/program change log to alert pilots.