It depends on the quality of the plastic for the bulb. I would hope they put a non-brittle thick enough plastic so it doesn't shatter and stab someone no matter how hard you hit them. Since it is translucent it seems like it would break, but that doesn't have to be the case.
As for the sub controller, as Hus said, there is no motion control for it, so no need for a strap.
I do agree that they should have made it so they can add soft rubber protection. Nintendo didn't even bother with it until it was painfully obvious people are incapable of controlling themselves.