@Zephray:
16 chars of Anyone?
1.You can play multiplayer only on missions, not in the story mode. but you can fight all the bosses this way, and it's much more challenging then the story mode.
2.You can play as Jimbei and Ace, and only on specific (and few) missions. and no, no VS mode.
3. there are a lot to scavenging throughout the stages. also, catching bugs and fish is much easier this time, bugs respawn fast and fishing is faster. but there are some incredibly rare bugs/item/fish that require a lot of mindless grinding.
4.imo, UC was much better then this game. but the boss battles here are much more epic and big. also, the "equipment" system here is great and fits One Piece, you equip "Strong Words", which is basically memorable phrases from the series, personally I love that kind of stuff, mainly because I remember a lot of them, so it's fun to use them in a game. evolving the town is kinda fun. having lot's of missions, some of them are pretty challenging, adds to the game.
Even though I liked the previous titles better, I by no means hate this game, I actually love it quit a lot :)
btw, it seems that there is a secret boss (probably Smoker and Tashigi) that I have yet to encounter, even though I completed all the ingame missions (and some of the DLC ones).