Modern Warfare 2 - Multiplayer experience (PC)

Call of Duty MW2 by Infinity Ward studio gave some of us very delightful experiences on PC FPS shooter and Co-op games. (Along with Call of duty 5 World At War).  It motivated many of us to upgrade graphic accelerators as well as CPU or anything that lacked of.

However, its multiplayer experience has been so disappointing even though game play itself is still fun.  Infinity Ward's first and the biggest mistake, I believe, is creating a peer-to-peer multiplaying mode (without a dedicated server).  I'm sure this has some advantages, but I would rather go back to older disadvantages than having troubles we encounter.

1) Most annoying thing is player matching.  When we search for a game to play, it groups players together and place in a lobby.  This lobby gets lost so often, which means we get kicked out or get disconnected, or get errors even before the game starts.
2) Since it's peer-to-peer, individual players can hack their own computer.  I've seen some creative modifications, but I see cheaters mostly. (wall hack, aimbot, very steady crosshair, so on)
3) The game picks a server when the game starts.  What happens when the server decides to leave?  Everyone's game pauses for about 15 second to transfer data, and resumes after counting 5 more seconds.. If it's successful, we would bear it.  However, numerous times, either game restarts (trashing our progress) or everyone gets kicked out due to error.
4) There is no LAN game.  The game is worthless without a connection to steam, and every computer needs have a licensed copy.  We need gather owners of this game to have a LAN party.

This game is dead as soon as another one hits the market. It won't last as long as COD 5 by Treyarch studios.