User blog comment:Kogath/Monster Hunter Cross Discussion/@comment-24995830-20150531151931/@comment-24995830-20150531173729

It could explain why there are 4 flagships since there are 4 generations currently and might want to celebrate that fact.

Also notice the order the monsters made their appearance

1st:Insect winged seregios look alike wyvern(Wyvern's were top notch in 1st gen)

2nd:Brute elephant beast(Pelagus were primal and beasty in 2nd gen)

3rd:Bubble leviathan(Leviathan's were the most noticed new class in 3rd gen)

4th:Carnotaur monster(Well actually I ain't sure about this, maybe due to the lack of brute wyvern's in 4th gen?

Also notice how the hunters were wearing armors representative to the generation they are in.