I think I'm going to withdraw from this conversation as we will never agree. We have COMPLETELY different reads on One Piece - the very nature of the story, the characters, and the hints Oda's giving us about where things are going.
I think he's made it painfully obvious that while there are many good marines, the very leaders of the World Government are as corrupt and as evil as they come.
After all this is a WORLD GOVERNMENT…that should send up red flags of corruption....hello, Brave New World!
Anyway, I view Dragon as being a hero in the future, and the Tenryuubito, and Gorousei as villains.
Tell me, where do you see things going? Luffy dying? No, then One Piece would not be a story worth telling...if the second pirate king meets the same fate as the first, it might as well have been the story of Gol D. Roger. Also this is a shonen where important characters, let alone the main characters RARELY die.
How can going to such lengths as hunting down an 8 year old girl, killing researches, utilizing CP9, etc. be justified in order to hide something....what possible reasoning could there be to hide the TRUE HISTORY, the void century in which the World Gov. rose to power....it's not at all significant Gol D. Roger knew this history and hid it on Raftel? The conversation between Robin and Rayleigh just means nothing? Kuma, Ivankov, and Dragon all being Revolutionaries means nothing? The corruption seen at the highest levels of the World Gov. (ie Akainu, the Gorousei, the Celestial Dragons, The Buster Call, CP9, Spandam, The shichibukai, etc.) are actually justifiable, but the actions of other pirates can nullify anything the Straw Hats do because they're a collective group of "pirates".
A World Government can NEVER be a good thing. Look at the beuracracy and corruption you see at a local level, then the state level, the federal level is ridiculously corrupt, and then if you add another layer....well what freedoms are left?
What makes Luffy the biggest threat is that he's made allies around the entire world, and if he issued a call to action as a second Pirate King, countries like Alabasta etc. would join him.
It's not about a sense of World Justice for Luffy....but an oppressive World Gov. hurts everyone close to him, there is a distinct possibility the True History is related to the Will of D., which is personal to Luffy...there are so many reasons he would stand up to an unjust world gov.