As with items and character names in IV, Pokémon names are no longer capped by default. I was almost expecting them to go the full length and give the heroes' friends' Pokémon cheesy, lovable nicknames but nope.
And I wonder why not. NPCs with nicknamed Pokémon, though usually not battleable, have existed. Mr. Briney, anyone, including Gym Leaders, who would trade with you or appear in a contest, and others...