What do i want?
1- First, please get RID of load outs, PLEASE, load outs in halo? are you kidding me 343? It is way more fun having to fight for the power-ups, rather than spawning with them, takes WAY more skill having to actually go get camo or an OS, rather than already spawning with them, it's also way more fun.
2- Fast kill times, no, not fast like COD, but fast enough to keep the game fast paced and interesting, like Halo ce/2/3.
3- DO NOT BRING ANYTHING FROM REACH BACK TO HALO 4!!! Halo reach wasn't the successor to halo 3, so it was made completely different, so please, if you're going to make a halo 3 sequel, make it like halo 3, but make it different enough to keep it interesting, but just don't drift away from the core to much
4- No bloom, on ANY weapon. Makes kills way to random, making the game less fun.
5- TRUE skill Ranking system, give something to achieve in multiplayer, no points system like COD, please.
6- Social and ranked playlist.
Overall, i just want Halo 4 to remain in the core of what makes a Halo game fun, Look at Halo CE, 2 and 3, and look what made those games fun in multiplayer, THAT'S what i want in halo 4, i want it to feel like Halo, and not a different game that you just slapped the name "halo" on the cover to get more sales.