Are they more likely to appoint someone they know well or someone they've never met?
My point is that Jesus never enters the picture in appointing these 2 new Governing Body members. The Watchtower Society is just a man-made Business Corporation disguising as a Religion. There are no ''faithful and discreet slaves'' on this earth, and if there were, the Society would put them to a better use in the teaching and preaching work. These 2 brothers are just corporate men.
As Anony Mous stated: Both of them were already lackeys at the GB.