I don't know if others remember this, but there was within the ranks of the elders (at the start of the elder arrangement, complete with the "rotation of elders") a lot of talk about how the society was moving away from the notion of a single president at the head of the organization. This was also at about the time of the death of Knorr.
The inside word seemed to be that the GB had taken over what had been assumed a natural succession of Freddy Franz to presidential status.
However, not long after this notion got promoted, sure enough - a Watchtower came out and specifically pointed up Freddy as "the new president in line with Russell, Rutherford, and Knorr" and included his picture in the issue. It was viewed by many as a manifestation of Freddy's ego and fight with the whole idea of the governing body at the time.
Looks like this human pride of the WTBTS leadership is very tempting - I think this brochure is another case in point. Like someone else said, not even other GB members seem to have had this kind of thing done for their passing. It made me wonder if this little brochure was not somehow tied in to a power play to see who now becomes the new man at the helm.