Team Diversity or Conformity?

A question that learners on FutureLearn's recent Common Purpose course "Developing Cultural Intelligence for Leadership" were asked was:-

"There are 100 people in a room. You must separate them into two corners, using any criteria you want (tall and short, men and women, north and south, extrovert and introvert - it doesn’t matter).
Now bring two leaders into the room. Tell them that they must both recruit a team from the people in the room to perform an identical complex task. The first leader can recruit from only one corner of the room. The second leader can recruit from both corners of the room.
What are the positives and negatives of having a diverse team vs. one that isn’t?"

My answers were:

“Unless the work that a team of clones undertakes never changes and is work that is ideally suited to whatever skills and experience the clones have, this team will never always be successful.
A diverse team is always best placed to perform work that is continually changing and such a team will also be more adaptable to change in the external environment. It is likely, however, to be harder to lead and manage such a team.
Thinking of teams reminded me of the following resources:-
(1) Belbin team roles (vid): https://youtu.be/EKmDEDUdBKQ
(2) Patrick Lencioni's The 5 Dysfunctions of Teams (vid): https://youtu.be/inftqUOLFaM
(3) John Maxwell's The 17 Indisputable Laws of Teamwork:-
(a) Intro (vid): https://youtu.be/YAib9JJJJDs
(b) Full audiobook: https://youtu.be/nVww7vVSfRk
(4) The Christian church has long understood the importance and power of teams, see https://goo.gl/FQLBRH."