For those of you who don't know, I am a big fan of One Piece. I am a Straw Hat pirate at heart. My otaku heart beats with the rhythm of the Grand Line and has the grinning Jolly Roger emblazoned upon it. Anyway, while I don't want to see it end, I have recently started thinking about how they should end it. The way I'd want to see it end is this:
The Straw Hats make it to Raftel, the island at the end of the Grand Line, but shortly after they drop anchor and get on the beach. A swarm of Marine ships, their war ships, even the Warlords (Minus Hawkeye who viewed no purpose. He knew he would face them on their terms shortly), like everything the Marines can throw at them. The crew says they'll hold back the Marines so Luffy can find One Piece. While he struggles at first, he ultimately agrees, making them promise when he gets back to the beach they'll be alive. So a massive clash happens, the Straw Hats battling not only for their lives, but for their captain's and their dreams. The warlords that have loyality to the Straw Hats also do all they can to reduce the Marine numbers. Eventually Sakazuki is tired of his forces falling. So he prepares to call in a Buster Call with the ships that are their. A few of his men try to convince him to wait so they can recall their forces from the island. No luck.
As the ships move into position for the Buster Call, a massive shockwave tears through their ranks. Marines are gunned down as the Blackbeard raft come into view, Van Augur's rifle Senriku smoking. With Sanjuan Wolf's sheer size and power, and Teach's powers of the Tremor-Tremor Fruit, the Marine ships are quickly reduced. Eventually, they can do little to stop any pirate. The Blackbeard pirates claim the shore. Blackbeard rushes forward into the depth of the island to find One Piece, meanwhile, the crew of the Thousand Sunny and the two loyal warlords stand against the remaining Blackbeard pirates.
Zoro draws his swords against Shiliew, Nami pulls her upgraded Sorcery Clima-Tact (I'd like to see one more upgrade her weather battlestaffs) against Laffitte, Usopp prepares to engage Van Augur in a shoot out, Sanji and Jesus Burgess begin to brawl, Chopper prepares to face off against Doctor Q and Stronger, Nico Robin puts her powers against Catarina Devon, Franky engages Vasco Shot, Brook fights against Avalo Pizarro, and Boa and T-Law both go up against the massive Sanjuan Wolf.
Deep in the wilderness of the jungle, Luffy finds a cave with markings that reveal it as the resting place of One Piece, as he starts to enter, a shock wave rips through the wilderness as Blackbeard confronts him. The ultimate fight begins. Through the island Straw Hat clashes with Blackbeard, neither gaining the adavantage. But with the captains, Blackbeard attempts to gain the upper hand with a new attack, Dark Beacon, creating a tower of darkness over the chockholded Luffy. The Straw Hat punches him off and engages Gear Second, giving him a massive edge. Teach attempts to take it back with an attack called "Dark Star Arena" creating a dome of pure darkness.
The captains continue their fight, Blackbeard's powers being increased greatly by their enviorment. Growing tired of the fight, Teach uses Vortex to draw Luffy to him, nullifing his Gear Second and Gum-Gum Powers. He creates a Quake Bubble around his hand, he is prepared to slaughter the Rubber Captain. Luffy announces he won't die, not without taking Blackbeard with him. A ripple goes through his body as he starts to grow pink. His uses of Haki started to nullify Blackbeard's ability to nullify his Devil Fruit. A Gum-Gum Jet Bell slams Teach away from him. An inhale and blow into his thumb allows Luffy to follow up with a Gum-Gum Giant Jet Gatling.
Blackbeard is severly injured, unable to be removed from the battle field from the gravity of Dark Star Arena. Focusing all the air into one fist, and engaging his Armement. Combined with Gear Second, the arm ignites. Blackbeard looks on in fear as Luffy unleashes an attack that combines all his traits, Gum-Gum, Gear Second, Gear Third, and Haki. The Gum-Gum Giant Red Hawk. With a crash and a stream of flames, Blackbeard is smashed through the arena, which disperses without his power, slaming into the ship of the Fleet Admiral. Luffy enters the cave and his crew finds it a short time later just as it caves in. Thinking their captain is lost, they mourn only to see him emerge, carrying one chest and wearing a coat similar to the one Roger wore on his execution.
He explains that this is all there was in the cave. Opening it, a tone dial. Playing it, it is a message from Gol D. Roger congralutating the captain that found this chest. He has found the greatest treasure a man can have. His crew, or better his friends who stuck with him. That is what makes a pirate captain great and worthy of the title of One Piece. So the crew smiles, now proudly serving under the King of the Pirates, as they march off back to the Thousand Sunny for whatever the world has in store.