Liked: Friendly rivals. Half the time you met up with Hugh, things didn't involve the two of you to battling each other. (The same unforunately cannot be said for Bianca.) Very far cry from the precedents set by Blue and Silver who only ever seemed to show up just to battle you.
Disliked: Plot-important routes being blocked by NPC's. Much more visibly obstructive than the classic HM obstacles ever were.