next time learn to read and understand, jesus fn'hell!
1st sword members are just like normal marines but if they go on missions and something goes wrong the marines can claim they had resigned and were no longer part of the marines thats it, that is the only difference between sword and normal marines nothing else, stop using your bullshit headcanons to try and push stupid agendas!
2nd Koby's dream is to be an admiral and only dumbasses like you think he will not reach that dream
3rd Koby is not the next Garp, Koby plans to be an admiral so he can change the marines, read the manga!