My FrankenCOD... Put a fair bit if thought into this...
Maps:
. Stormfront - Ghosts
. Cargo - BO2
. Standoff - BO2
. Hydro - BO2
. Underground - MW3
. Array - BO
. Summit - BO
. WMD - BO
. firing range - BO
. Wasteland - MW2
. Underpass - MW2
. Sub Base - MW2
. Estate - MW2
. Derail - MW2
. Vegas Junkyard - Rainbow Six Vegas 2 (not COD but I just had to have it!)
Wow that was hard, when I got to the MW2 maps I just wanted to pick them all!
Guns: just some memorable guns I would love to see again...
FAMAS - MW2 my favourite gun in any shooter ever!
RPD - MW2
F2000 - MW2
AUG - BO
FN FAL - BO
FAD - MW3
MSMC - BO2
PPM901 - MW3
Aks74u - BO
Intervention - MW2
Desert Eagle - MW3
M93 Raffica - MW2
G11 - BO
Barrett .50 - MW2
G36c - MW3
Commando - BO
Chicom CQB - BO2
.BO2 Create a Class
.Perks from every cod, they all have a purpose for something and someone, so why not?
.Ghosts squad points unlock system
.BO2 style scorestreaks
.Mw3 style specialist, with set score points not kills
.Assault and support streaks
UAV or equivalent to be a higher points total than previous titles, to try and ease the UAV spam and the need for ghost/assassin type perks...
.Ghosts excellent connection
. Even more character customisation, more like RSV2, pointless for gameplay but it's just nice to create a character and unlock a lot of things...
I love the idea of nukes but I don't think I can include it because I think it's a big incentive to camp hard...