Adding Campbell is a free, warm body to add to a line up that doesn't have enough depth to put twelve forwards on the ice at this point.
While needed I don't have high expectations. He was just waived, all teams in all three leagues passed on him so Kitchener released him to make room for their youngsters to get icetime. If he can fill some minutes, play a steady role while Windsor's kids keep seeing more icetime there's nothing wrong with the addition. At the same time not having warm bodies within to provide needed depth speaks for itself.
I'm sure we see at least one more addition, maybe two if anyone else is moved. Need to be able to ice a full team every night.