[Halo 4 MAPS]

A throwback map pack consisting of at least Guardian and a few other H3 maps would get my money.

[Rank-restricted gametypes]

yes but realistically really good players playing against really good players are still going to have an overall KD of say around 1.4 or so. what will stop the average players playing with say other average players with a 1.4 KD getting paired up against each other? One game you could go +20 against newcomers while the next game you could get matched up against the really good players and go -20.

The scenario I had in mind was quite similar but the idea I was getting at was that there could be players with a 1.4 K/D that was racking up say 3.0 K/D a game. This individuals K/D would not go up due to his high kills and deaths that he has achieved over his time of playing the game. But overall as you said the good players or average players will still be matched against each other.

[Rank-restricted gametypes]

An issue that I would see coming in the future with the K/D and win combo would be that over time peoples K/D would be locked up. At a certain point you cant really raise your K/D significantly but the amount of games you're playing would just continue growing. Over time some people do get better at a game so their K/D over time may not actually reflect their current skill.

But then again this may not be a problem since in theory the veterans would still be competing against veterans.

[Rank-restricted gametypes]

even though the 1-50 is flawed it is still my favourite system. There was no better feeling than trying your guts out to get to that next level, and the anticipation at the end of the game waiting for the 4 second countdown to see if you get that next level.. The K/D option could possibly not work. For arguements sake, how would they differentiate say a legitimate level 50 with a 1.5k/d playing other legitimate 50's all day, to say, a level 20 with a 1.5k/d playing other level 20's all day... If they get matched up by K/D, the level 50 would walk all over the level 20. I think if 343 could put some serious thought into tweaking the 1-50 system to get rid of all the boosting, it could be good. People complain about new account starters, honestly this is always goin to happen and there is no way to fix that.

I am with you on favoring the 1-50 system but if there had to be a new matchup system I would say use a mixture of K/D and games played. Because of the probable skill difference between X player: 2.0 K/D with 800 games played versus Y Player: 2.0 K/D with 10 games played. But as you said the 1-50 system could still be used with tweaks and there is no way to stop account starters. I believe COD tried to tackle this problem with the option to "reset" all your stats.

[Why Halo 4 Needs Seperate Playlist]

I agree that Halo 4 should have separated playlists. A ranked playlist should be played by people who want to win and are willing to be part of a team.