I've ridden the DL version with the added characters, and to be honest it didn't really bother me. It was subtle enough that you could easily miss them if you didn't recognize the characters or were looking in another direction.
From what I've seen of the updated Tokyo version, it seems like it might be more "in your face" with the characters, which could be concerning. Now the first thing you see in the ride is a shrine to one of the company's biggest franchises, and it seems almost impossible to miss.
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