User blog comment:B214/Question and Answers 3/@comment-166.147.123.170-20140722173739/@comment-75.105.131.164-20140722200141

So far I don't think that there has been a balance breaker that changed into a subspecies balance breaker. I could be wrong but I think it is the strong desire of the possessor that is trying for a different sort of balance breaker that creates a subspecies when balance breaker is reached. As I said I could be wrong but I think once balance breaker is reached it is either a balance breaker or a subspecies balance breaker. But anything is possible in this series.