This is pure speculation. Just one of those things that make you go, " HMMMMM??!! " I found a quote that I had never read before, and I found it interesting... Is it coincidence that Mark Sanderson, the 8th member of the GB is appointed just in time for the nu-light?!
WT 09 06/15
The Faithful Slave Appears
6 The new nation, "the Israel of God," is made up of spiritual Israelites. (Gal. 6:16; Rom. 2:28, 29; 9:6) It came into existence with the outpouring of God's spirit at Pentecost 33 C.E. Thereafter, all spirit-anointed Christians became part of the nation that now served as the slave class appointed by the Master, Jesus Christ. Each member of that nation was given the commission to preach the good news and make disciples. (Matt. 28:19, 20) But was every member of that group to be involved with providing spiritual food at the proper time? Let us see how the Scriptures answer this question.
7 When Jesus appointed his 12 apostles, their primary work involved being sent out to preach the good news to others. (Read Mark 3:13-15.) This assignment was in harmony with the basic meaning of the Greek word apostolos, which is derived from a verb meaning simply "send forth." However, as time went on and the Christian congregation was about to be established, the role of an apostle became an "office of oversight."-Acts 1:20-26.
8 What was the primary concern of the 12 apostles? The answer can be seen in the events following the day of Pentecost. When a dispute arose about the daily distribution of food to widows, the 12 apostles gathered the disciples and said: "It is not pleasing for us to leave the word of God to distribute food to tables." (Read Acts 6:1-6.) The apostles then appointed other spiritually qualified brothers to care for this "necessary business" so that the apostles could devote themselves "to the ministry of the word." This arrangement resulted in Jehovah's blessing as "the word of God went on growing, and the number of the disciples kept multiplying in Jerusalem very much." (Acts 6:7) So the primary responsibility for the spiritual feeding work rested with the apostles.-Acts 2:42.
9 In time, others were entrusted with weighty responsibilities. Paul and Barnabas, under the direction of holy spirit, were sent out as missionaries by the Antioch congregation. They also became known as apostles, although they were not included in the original 12. (Acts 13:1-3; 14:14; Gal. 1:19) Their appointment was confirmed by the governing body in Jerusalem. (Gal. 2:7-10) Shortly after that, Paul had a part in dispensing spiritual food. He wrote his first inspired letter.
10 However, were all spirit-anointed Christians involved in overseeing the preaching work and in preparing spiritual food? No. The apostle Paul tells us: "Not all are apostles, are they? Not all are prophets, are they? Not all are teachers, are they? Not all perform powerful works, do they?" (1 Cor. 12:29) Although all spirit-begotten Christians engaged in the preaching work, only a very limited number-just eight different men-were used to write the 27 books of the Christian Greek Scriptures.
http://www.numerology.com/numerology-numbers/8
" It is true that the number 8, more than any other number, puts the emphasis in the areas of career, business, finances and authority. However, as with many other single-digit numbers, the shape of the number reflects its most important attribute, and in the case of the number 8, that is, first and foremost, balance. "
" Some of the more recognizable traits of the 8 are drive, ambition, authority, efficiency, organization, management, discipline and control. The 8 is goal-oriented, focused, has good judgment, can discriminate and is practical, a realist. Its closest relative is the 1 as both numbers are powerful, have strong leadership skills, are unquestionably masculine and will not shy away from a confrontation. However, where the 1 lacks diplomatic skills and an understanding of human nature -- more typically the traits of the 2 -- the 8 has those abilities as well, which is perhaps the most important reason the 8 tends to do well in business and in authority roles (the military and law enforcement draw a lot of 8s)."