What is the best plan ever formulated in One Piece by an OP character, in terms of goals, means to achieve it and how smartly they are used and of how meticulous the planner is with the details ?
I'd say that Crocodile and his Operation Utopia to take over Alabasta is so far the best thought and meticulous plan ever formulated by an OP character, with Doflamingo's successful plan to take over Dressrosa by blackmailing King Riku into drawing money from his own subjects then have him and his army turn on their people via Parasite and then he and his crew "intervening" as the saviors of Dressrosa coming second.
Other than these two I don't recall any plan that I would qualify as good or particulously well-planned in OP.
I'd say that Crocodile and his Operation Utopia to take over Alabasta is so far the best thought and meticulous plan ever formulated by an OP character, with Doflamingo's successful plan to take over Dressrosa by blackmailing King Riku into drawing money from his own subjects then have him and his army turn on their people via Parasite and then he and his crew "intervening" as the saviors of Dressrosa coming second.
Other than these two I don't recall any plan that I would qualify as good or particulously well-planned in OP.