What would happen if...

[ruhtraeel]

...Lucario held his Aura Sphere in front of him to charge instead of behind him.

Or on top of him

 

[Darkgun]

Well, aside from looking a bit silly, Lucario would lose access to a few neat tricks involving catching people who are behind him with AS or forcing said situations with a BrAS. Additionally, this could cause a few issue with opponents struck by Lucario's moves experiencing knock back cancel via the charge hitboxes, which I would personally rather not be on the same side that I traditionally kill with.

That said, there are likely some advantages to this, though I can't necessarily immediately think of any aside from using it as a pseudo-jab.

 

[ruhtraeel]

I've also thought about the adjustment of where he charges it in general, such as more on top of him rather than behind him. This would give him a decent OoS option, provided the ball is big enough (I don't know if it is, I don't actually play PM competitively).

 

[Fearless]

I feel like it'd be much stronger personally, you might be able to infinite jab-ASC combo depending on their weight. Just a theory though, it'd be fun to implement just to test out.