Shatter, per the ARB does require some form of named target, so a Shatter carrier should name a target, even if the target is "thing". Rituals on the other hand aren't really designed to be Packet/Carrier delivered. Best practice seems to be (out in the PNW at least, check with your local plot team) that Destroy Magic should also have a voiced target "Spirit/Body/Item" to reduce confusion, and to show the proper target.
We're in muddy waters though, so please, PLEASE consult your local plot/marshal team for clarification in the cases of Rituals delivered in odd ways.