Invasion: Ulduar 1.1

Hey forgehub, this is my first map posted here and I really hope it'll be a winner. Please comment, criticize, compliment, etc. and well... enjoy :D
Raid: Ulduar
Ulduar is modeled of course after the WoW raid. It's made as an invasion gametype (Raid) so that spartans are the "raiders" and elites are the "dwarves". Naturally, with the 3 phase limit, not every Ulduar encounter was possible, but I tryed to capture the spirit of the raid.

This is the "raiders" first spawn area. Modeled after the Ulduar vehicle gauntlet event, the spartans get two, fast respawning heavy vehicles, and quick mongooses for infiltration. There is also a teleporter which becomes available once phase one is complete, which allows quicker access to phase two's area.

The wraiths for the defenders are immovable, as are (obviously) the shade turrets, and are mainly for holding off light vehicles, and footsoldiers, as the scorpion will be able to blow them to bits quite quickly. The defenders all need to work together to either hijack and destroy, or just fire at the scorpion to take it down, and delay the inevitable.... The first phase is assault, so the person carrying the bomb cannot enter a vehicle's driver seat. The bomb plant point is right in front of the back wall there, and once it's detonated.... avoiding spoilers..... the next area becomes acessible.

Next is a small, bland hallway, with one narrow passage. The spartans now respawn near here, and the elites spawn by the new territory objective.... here.

This was taken in forge, so the hill would be visible. No defensive points in this phase, just an open and out brawl for the territory. The rocks won't be there until the territory is captured and the next wall falls...

REVEALING YOGG SARON HIMSELF! In this phase, the raiders need to capture the brain of Yogg Saron (the core), and using the convenient teleporter to the end-of-phase-one-wall, bring it back to the initial spawn point for a win!
Will you unlock... THE SECRETS OF ULDUAR?
Patch 1.1 Notes:
*Added an "antechamber" to phase two complete with a defensive rise, barricades, and a crate, when moved provides the attackers with a tactical respawn point.
*Redid some walling to make it more graphically pleasing
*Redid the entire gameplay of phase two, to accommodate the addition of the new "Antechamber"
*Added new "Keeper Towers" for phase one and three defense/offense
*Added "vehicle repair pad" for phase one
*Updated phase three class system to accommodate patch changes

Vehicle Heal Pad

Antechamber Rise

1.2 PTR:
*An invasion slayer variant with the keeper towers in phase one being targets?
*A simple assault variant where the offense must destroy the towers, and then a large robot?
*A complete redo of phase three's "flag return" mechanic, with an alternate route, perhaps with a vehicle?
*Boss cameos?

Redid links above, but here they are too just in case:
Map dl: Bungie.net : Halo Reach : File Details
Gametype dl: Bungie.net : Halo Reach : File Details