I'm totally against the "og admiral trio>>>>new admirals" just for the sake of nostalgia. To me, an admiral is an admiral. Just Akainu gets a special plot due to his inevitable battle against Luffy.
But man....I wish we could get something like the train movie for the admirals fights. A big budget movie to get all the good animations. Imagine Fuji going all out against Zoro, summoning not just a meteor, but a meteor rain and Zoro cutting them all.
Sanji and Kizaru going at some really DBZ levels of speed across the battlefield.