I'm not the best person to do that analysis.
As the employer, it is important for the federal government to look at the impact of the program. Do you expect this service to apply to the provinces as well or just to the federal level? Will the municipalities be included, since they surely have responsibilities related to deceased persons? That is why I cannot answer your question and give you the magic formula. I can only point out that, in the past, we have seen a number of federal initiatives that were inadequate, especially ambitious initiatives like this one.
I think that, if you are going to undertake this initiative and implement it, you need to invest the necessary effort in the planning, which has often failed in the past. Take the time to carefully examine the situation, see what the tasks are and which parts you are going to bring together. Once you have that information, you will be able to determine how many employees and what types of tools you will need.
As I said before, I cannot stress training enough. There is a training gap, not only at the federal level, but also in terms of many other employers who do not invest in the resources needed for the training of employees.