Oh lol, my bad. He is the main writer yeah. But he's also one of the executive producers (I read that and thought I remembered him being showrunner). Still, it still takes away this image you might have a of a faceless corporation (Netflix) profiting on something they don't know, and actually gives hope that they will do the story justice.
Thing is, this isn't anything. It already is the most succesful comic by single author, Oda will certainly beat JKR in sales, and he will also outlive Danielle Steele, which will make him the most succesful fiction author alive (and since everything becomes more and more digital, who knows maybe he will also be the last one to definitely claim this position). This isn't niche genre stuff, it's world literature and the flagship of the entire anime/manga genre, in turn of utmost importance for the cultural significance of an entire country.
One Piece is huge, and the biggest story of its kind there is at the the moment!
Anyone who has two brain cells should know this is gold, it can be the next Game Of Thrones, or bigger! Heck, with enough money behind it, One Piece could easily blow the MCU into oblivion, but Netflix doesn't have this money (probably no one has, lol). Still, this will be done high quality, I think.
Wether this is enough to please me, someone who spent the vast majority of his life on this story, and who has already been occupied by all its central themes even before, that is another story. Kinda weird, I always used to make fun of purists lamenting about changes and cuts, now I am in that same position.
Though, if their budget is large enough, East Blue Saga should go without any significant story cuts. Basically I think it's already hard turing the 20 chapter arcs into more than one episode. Rather than cuts, we will likely actually see extension, as they need to keep their contracted actors busy.
Alvida for example, I could easily see having an extended role, both versions, actually! Like the Manga plot of Luffy punching the overweight one would take two minutes on screen. I'd rather see at least half of the first or the entire second episode be the Luffy-Alvida-Coby plot. Etc. Etc.