That's not new @@Masterlixx
MW 2, Black Ops I+II had no custom maps, no dedicated servers
MW 3 had no custom maps but a dedicated server.
I think you won't find games like CoD 4/5 with this features in the future. Take Counter Strike Global Offensive. They implemented game modes like Gungame and keep the game closed. No more dedicated servers, mods... I was disappointed because Valve was known to keep their games open and customizable. Now? Lobby based gaming on Valves 's servers. This sucks! I played CS and Half-Life for years.
And there is only one reason: money!
They don't want us to play this games "forever".
Best example is EA:
They shut down the servers for FIFA 11 in January. You have no chance to play with or against a friend anymore, because there is no way to setup a dedicated server or playing matches over LAN/VPN.
The next one will be BF 3.