Easily forged custom games, i really can't wait to bring a team together and play some custom games, some of the best online gamplay ive ever had were halo 2/3/reach customs!
Games will always change over time but watching halo 4, it look more halo then reach was and I really think that this is going to be the best one so far. Time will only tell tho.
I for one much preferred the Halo Reach layout to halo 3, melee as RB just worked better, I know people still use the "Recon" layout tho so I hope the options there for all.
I'm so glad they added the magnetic tool, I was hoping for something like that since halo 3, forging is going to be so much faster can't wait to have a go.