Got an idea here, I think it’d be awesome if they gave each of us a room.
This room would serve as the menu for multiplayer.
Everytime we end a game, we’d go back to it.
It’d be big enough for us to walk in and if we wanted to send a message to friends, we can do it using a console in the room.
To go to War games, you simply have to access the War games console on the side(You have different consoles for different functions) and it will show you the different play-lists as well as other things. And before the loading screen, there’d be a short cinematic of you walking to the War Games deck.
The 2nd console that’s in the room will allow you to contact friends as well as viewing all your stats and seeing which maps you play the most, which weapon you use the most etrc…
On the 3rd console there will be all the tutorials and tips as well videos to help you learn the maps. You will also be able to access the Halo enclopedia and even Halo Waypoint.
In this room, we can customise our equipment and weapons, there’d be a workbench where we do this. Every action your Spartan does to the weapon is visual; When you take a scope off, your Spartan also does that.
If you go to the wardrobe/closet, it switches to third-person and you can try different armour sets.
Our recently/Most used armour sets would be hung up on walls. This makes the room more distinct as well as other things.
Also our favourite load out would be on the wall too as well as our most favourite power weapon(Roleplaying purposes).
There’d be a bustle-kind of sound going on outside the room to show you the ship is living and that there are plenty of people walking around.
Every now and then, a holographic announcer of the captain would appear (Like Cortana but of the captain this time) to tell you what the going-ons of the ship are today. It’d be random, he’d say things like “Good morning, this is the captain speaking here”. And he’d even give speeches sometimes.
There’d be things you’d expect from a bedroom; A bed, a bathroom, a mirror and even a futuristic TV.
There’d be a nice view too, one of whichever place the Infinity is in.
(Here’s the best part though, the view of the Infinity (ie: where the Infinity is) depends on where you are in the campaign or Spartan Ops.)
You’d be able to transfer to better and bigger rooms with better views with your Spartan Points, I think that feature is brilliant. You’ll be able to change colours of the room too, but you have to unlock them first.
The TV could be a mini feature where you can view Famous Halo-Web-Series such as Arby N the Chief or Red Vs Blue. Or even general Halo machinimas in particular.
Another thing! You’ll be able to watch Live MLG matches from there.
Some people may say I don’t want to walk around to do things we have menus for, well the room won’t be THAT big 
The idea of this is to even more incorporate the multiplayer and the Story while making the player feel like they are in a persistent world. It is really good for Roleplaying. Also you get the feeling you are part of the bigger picture.
A lot of people have said, why not implement the full Infinity for players to be in and I know that is very difficult to do, so I think this to be a better alternative.
If you guys can think of even more features that can be done with this then please suggest them! 
If we can get enough support for this, then maybe 343 will implement this. That is of course if you guys like it.
Btw, sorry if I’ve made grammar mistakes. Typing on the IPad sucks
