[quote=@Animus]
For the latter one, you didn't really have to explain certain skills such as Juggernaut-Scouring Stars because you can already infer something like this is possible from the potential of your Noble Arm.
[/quote]

I'm pretty sure Juggernaut-Scouring Stars was made a specific sub-skill because it requires imagining extremely fine dust, which is hard and necessitates specific rote-training.