p. 120, Volume 12 "The Legend Begins"
'Using this Mountain as your start point, you must pick one of seven magnetic fields. No matter which island you begin from, all the routes eventually become one…'
I wanted to bring that up so that people could find Oda's early "map" of the Grand Line. Viewed askance, it does somewhat resemble a mountain. Meeting in the New World, near the end of the Grand Line could be seen as approaching the 'summit'-not only of the journey toward Raftel, but also the level of the strongest men alive: men like Newgate, Shanks, and Mihawk. Used in that context, I personally see no problem with the use of the term 'Pirates Summit'--if I did, I wouldn't have used it in my avi/sig.