User blog comment:Vamsisonu/Changes being made/@comment-3563898-20120313192520/@comment-4754162-20120314110934

Vam-kun, for that time, it was perfect. But now that the loss of a familiar Yonko (WB), despite the rise of a new one (BB) with powers of his and the old yonko, plus the loss of veteran Sengoku and Garp, despite the appointment of Sakazuki, plus the loss of two admirals (one promoted, another walked), plus the loss of several shichibukais (Kuma, Jinbe, BB), the new era now would need a new structure to balance it out. The old one that you mentioned was enough to counter the balance for years but the events leading up to Marineford war causes the balance to shatter when WB challenged the Marines for war (or was it the other way around). Thus its created to be destroyed, with a new one to replace it.

For sure, we have heard of a fleet admiral, yonko and shichibukai, so its for certain these are still intact in the structure (just need to know what's the number of shichibukais now) but there has yet mentioned of admirals, so its still left unknown whether if the admirals are still there. You won't know that Sakazuki may hold supreme power and dissolve the admirals - transferring Borsalino to do bulb maintenance or something xDxD