Question, why does Bard and Machinist share the same core mechanic?

[Saccharin]

I just find it weird that a new job is released and gets a mechanic, that is also given to another ranged physical dps class they both get the skill at the same level.
So the question is, why give Bard wanderer's minuet? You could've kept that mechanic exclusive to Machinist, but you decided to give it to Bard as well. Does anybody know if there is logic behind this? I feel like both lose their uniqueness due to their similarities in skills and how they are played.

As punishment for moving. From a balance perspective Bard had instants so compared to BLM they didn't get punished for moving. To compensate in HW SE made base bard damage lower so for them to be competitive they now have to use WM. The downside is that moving is now bad - like BLM. The same principle applies to MCH,

Simple really.