Here's some game changing questions.
If Locke was a candidate why didn't Jacob make him protector as soon as he landed on the island? Locke was drinking the island kool aid from day 1.
If Jacob chose the candidates because they were flawed and alone then why did he approach Kate and Sawyer when they were kids?
Why is Micheal trapped on the island but Sayid isn't?
Locke needed to be tested like everyone else.
Kate and Sawyer were loners from a young age. Kate wanted to run away all the time, Sawyer had just lost his parents.
Michael murdered innocent people on the island for his own personal good.