I’ll check them out when they come out, but they’re definitely not the focus of my fandom. The reason I bring this up is that, despite being a huge fan of One Piece, I don’t regularly keep up with everything about the movies and specials. I’ve personally found the One Piece ones to be at least as consistent as the Dragon Ball Z movies and probably have a better batting average than the Naruto movies. That’s kind of the nature of Shounen series movies, though.
Some are definitely worth the time, others aren’t. That being said, I find the movies and specials to be very hit or miss. I keep current on the manga, keep up with the anime, have several Portrait of Pirates figures, etc. So, of the Mithical staff, I am almost certainly the biggest One Piece fanboy.