these were exactly my thoughts as well. the point is, you know what stadium it is. Without the photoshopped New Era banner across the top, there is little reference to the name New Era and you would never know its New Era Field.
Again, you would just think it's some cheesy billboard advertising hats.
Fwiw, I don't care how successful the New Era company is, if your stadiums entrance is going to be 3 hats wallpapered on a billboard, you look 2nd rate.
Now, that doesn't mean that the billboard won't change. That there won't be some kind of permanent New Era Logo on the stadium at some point in big, tall, 10ft letters. But right now it's looks like awful.
If you don't agree, that's fine. But no other stadiums in the league have their sponsor named wrapped in wallpaper, barely showing the sponsors name.