With everything this game encompasses and all of the likes, dislikes, wants, needs, expectations and everything in between, the Godling being named Johnny is the epitome of a non-issue IMO.
*edit* I would also add as other have said - It caught me off guard after seeing him for the first time, It is a great play on expectations. Dijkstra even remarks on his name when he tells Geralt not to laugh " I swear Geralt, that's the lil squirts name, he lives in a wee hollow in the side of a hill....NO. his name is not Bilbo!".
It is an odd choice but then again I think that is why I like it so much. It's going against the grain when considering what most fantasy themed books,movies and games would more than likely name him.
I didn't mean to dismiss any opinions or come off rudely towards the OP. If I did, sorry about that. We are all entitled to what we like/dislike
I think no matter what they decided to name him, he still would of stood out to me as a memorable character. If what we have seen so far is anything sufficient to go by. Loved his facial expressions,creepy owl eyes and face palming Geralt lol. Whispers floating around have said he is quite a talkative chap who loves pooing shhhhh he might hear me.