MISCELLANEOUS:
-HUD Shaders (like reflection mapping for ice etc.)
-Material friction (e.g. Ice would be slippery, so the player and other objects would slip and whatnot)
-3D Red+Cyan Shader Support
-Terrain Editing
-Awards/Acheivements/Challenges for different skills e.g. Quik-Scoping, One-Shot Kills...
-Weapon Speed Modifier (change the speed of reloading etc.)
-HUD Lag (As in it 'chases' the screen, so it swings to the centre when the camera moves)
SINGLE PLAYER:
-Dual Wielding
-Player Camera Movements (e.g. the camera does a recoil effect when hurt, or falls to the floor when hit in a explosion).
-Protection equipment e.g. Riot Shield
-Vehicle Support (of course, a blatant ambition for FPSC
)
-Real-Time weapon upgrading (like Crysis, adding different attachments on etc.)
MULTIPLAYER:
-Killstreaks (e.g. 3 Kills - Radar, 5 Kills - Guided Missile etc.)
-Customisable Killstreaks
-Class Customisation (ability to change starting weapons and perks etc.)
-Friends Management
-Messages Management
-Chat Looby
-Main MP Looby (like CoD5's lobby or even "Halo 2 for PC"'s LIVE Game Lobby)
-Multiple maps
-Vote to Skip Map
-Ranking System like CoD:MW2 (Level 1, 2, 3...)
-Emblem and Title Modification (your 'tag' in MP games like MW2)
-Dynamic Objects
GRAPHICS:
-Built-in Material Editor like UDK or Unity
-Real-time Lightrays
-Occlusion Maps (balances how the light hits a material)
-Real-Time Ambience Colour
-Multiple Shader Support on one object
-Reflection Mapping
-Time of Day System
That's all I can think of right now xD. They're all for the top of my head, so I must have a pretty big head...
.
-SSG
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