What you are, is an unreasonable fanboy.
In this case, and in most, consistency does matter and for obvious reasons for a television network. If "everyone would get used to it" is the best arguement you have, then it would be best for you to just keep it all to yourself.
If it comes to what the author wants, he likely doesn't mind. He doesn't have the time nor the energy to be pissed about what a few of his characters are called in some foreign adaptation of the One Piece anime. He is probably a very reasonable person and very understandable of the companies wishses. He's not going to complain and argue about the same crap that you unreasonable fanboys do. Regardless, Eichiro Oda doesn't have any 'say' on the subject, and has absolutely nothing to do with what we're talking about. Only Toei, Cartoon Network, and Shuiesha have any say on that.
You're desperate and resort to unreasonable arguements. In short, you're obviously not very intelligent. I know what you're going to say. "The author is the most important part of One Piece, he is just as unreasonable as I am and longs for the names to be reverted to the original on the TV broadcast, the companies are disrespecting his wishes, and that you obviously don't know what the hell you're talking about."
I've heard the same crap from you and many other people before. So please, don't waste your time.