These are just a few ideas I've come up with and finally got around to posting, skip to the end for a summery:

Holodeck In Haven: A place where knights can go and equip anything they want whether they have it or not. There could be a PvP room and a PvE room where the enemies that spawn could be chosen in some manner. Also, any unique variants and heat could be applied to equipment. The whole idea of this is just so people can test equipment they might want to try to get; however, if you do not like the whole Holodeck idea, you should still add free PvP with revives like the Advanced Training Hall.

Lockdown Stuff: First off, I think a few things regarding damage should be changed. First is that, you should actually be able to see how much damage you do when you hit someone (you could add in the weaknesses and strengths damage animations based on equipment, but I don't think that matters as much.) Second, I think there should be a live damage counter so that you can see how much damage you have done as a grand total while you played (you could also add a live captures and defends counter which would be nice; what constitutes a defend anyway?)
Another thing I think that should be added to Lockdown, is a kill counter, which is basically: if you did about 50% of the consecutive damage done to a person(consecutive being about less than 5 or so seconds between getting hurt,) then you would get 1 kill added.

And finally, I had an idea about The Core the other day. Okay, so, the way it would fit into the game's story, is that, breakthroughs have been made with opening The Core and an initial area has been opened to it. The way to access it would be, from depth 29, you could walk to the area where The Core is; form there you could take an elevator down into The Core. Once inside The Core (the level could be called something like: The Core, The Entrance. Also, I imagine all the walls and floors being white-ish,) you would have the elevator (you'd have to spawn next to it so that you wouldn't go back up) which would take you back to depth 29. Next to that room would be another room (it doesn't have to be a room, just an area) through a one-way force field; inside that room would be a party button. Once pressed, the one-way force field would switch directions and an onslaught (well, not right away, more gradual) of enemies would begin to swarm you. The enemies could be sort of mecha-ish but more life like but very block-like (it's kinda hard too explain, but if I took the time to draw it, well, it would be a while, 'cause I suck at drawing; the only part I can really explain is that their head would a cylinder with 6 horizontal strips that would be blue-ish, maybe #1F17BF, organized into 2 columns and 3 rows,) their main color would be more white than the walls and floors. The goal would be to survive as long as possible, when you are ready to leave, you walk through the force field and proceed to the elevator. The enemies (which I have no idea what to call them) would drop no heat, not as many crowns, but could drop special token ('cause seriously, there needs to be more token weapons) that could be traded for stuff like boss tokens, and could also drop weapons rarely.

So to sum up: An "any equipment" area, various live counters to Lockdown along with a new element, and an area inside The Core.