The FedEx Custom Critical recruiting policy, as I understand it, is not unlike that of many, if not all, the major expedite carriers, and it has remained unchanged for as many years as I've been with them. They are constantly revising their fleet size to accomodate business levels and strive to maintain the perfect mix of trucks to freight. More often than not it seems as though they have altogether too many of whatever size truck is being discussed, vans being no exception.
The van seems to be the most popular vehicle for financially stapped wannabes and old-timers wanting to get away from the logs, scales and DOT roadside inspections. Because of its popularity, carrier quota are quickly filled and they may go for long periods without increasing the van fleet sizes. I can say with high confidence, however, that Custom Critical has no pending plan to eliminate vans from their inventory.