Friend, I couldn’t agree with you more, the quality of the OEM luggage is frankly appalling. My factory top box fractured a forward mounting lug, simply by riding smooth roads and without any heavy loads on board and I am also taking this up with Yamaha as a warrantee claim, I’m sure that this will become a common occurrence as time goes on.
Yamaha are not the first to field rubbish OEM luggage by any means (my Triumph1050 Sprint had a recall on box’s which were more washing machines than luggage systems), but on this type of bike and in the market in which they are competing, this is a schoolboy error and simply should not happen.
Apart from being fundamentally flimsy, the locks are sticky as designed and the key sticks out way too far, introducing torque into the key, which will eventually fatigue and snap. When locked, there is a gap, which screams “jemmy me open” and from the feel of the lock, that would be easy to do.
If you are in the market for luggage for your super ten, avoid the OEM kit and go for reputable after market setup.