You didn't get the point of my post. It is logical, or at least it seems logical, that they created a new class, with better equipments and whatelse; but why did they named a ship after the Pillar Of Autumn? Why Pillar of Autmun II? We haven't even seen it yet, they showed us the Infinity was escorted by many Halcyons or Autumns, yet we saw none of them in action, nor above Requiem, nor above Earth. Then WHY did they show us six or more Cruisers if later they magically disappear? It seems that they wanted to give some Halo-feeling at their game, but we (and with we, I mean I) don't feel it like an Halo just because we see a bunch of ships in a CG cutscene.
http://www.halopedia...illar_of_Autumn
Legacy
The Autumn-class heavy cruiser, which entered service as the replacement for the Marathon class after the Covenant War, was partially designed after the refitted Pillar of Autumn. Due to the instrumental role the Autumn played in the war, the lead ship of the new class was named UNSC Pillar of Autumn II in honor of the original.[14]
why NOT name the first ship of a new class after the ship it is based off, when the ship it is based off probably has the most ship to ship kills of any lone UNSC ship?