The map will have 5 points with 2 on the bottom, one in the middle, and 2 on the top.
The map would use the same blocks as the ones used in the Dreams and Nightmares. In theme with the Core level there would be no HP pads anywhere on the map (not even in spawn).
There would also be various traps, the respawning white orbs (wall blocks that break with one hit) would have a chance of being a black orb (which spawns a swarm monster when broken). From time to time patches of the map would change into the swarm spike traps (which will damage players that stand in this too long or run into them), Void turrets would spawn in floating island blocks near the end of the round.
Halfway through the game a Swarm source would spawn somewhere between the center control point and one of the other points. If brought down to a small size it will fade and move to another location (between center and outer CPs).
There will be 4 paths to the center point each from the outer points, when a point is captured a key will spawn. The center point can be unlocked with 3 keys and the doors will reset after the center is captured. Unfortunately those inside the doors will be killed as a Swarm turret will spawn in the middle of the point and will stay there till the center is accessed again.
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This map will encourage players to work together to fight the enemy team, move the keys, survive the map itself. The lack of HP recovery will lead to more finished battles.
I like the map and ideas behind it, but I don't think we should really have a core/swarm themed lockdown map. I know, I'm pulling the lore card here, but it's rather important.
The swarm infecting the coliseum would be very nasty. Instead, I would recommend having this be a sort of IMF map. Have those rotating switches have to be flipped by teammates (or enemies!) to reach the center point. This would mean teamwork would be forced in order to take back the map unless you hold most of the other points. In the center room, after the point is captured, you can have rockets just start firing down upon those inside. A striker or a recon will die, but a guardian might be able to survive. This means the player can try to run out of the area without being killed.
However, this means that health pads are still on the map.
I do like the idea, but I don't like how it conflicts with lore. The Core is very important, not something we should just take lightly and say "yeah PvP is now in the core". Game-mechanic wise though, it's great.