While this Halo game has certainly made a large leap to appeal to the same kind of players who enjoy CoD (Pretty large leap), there is nothing that I have seen to resemble CoD in space.
However you've made some pretty valid arguments as to why you are disappointed in the game that I'd love to respond to, and I certainly encourage other people to consider before exploding in here and attacking him.
I definately share your concern with the lack of Trueskill. You're right that it was ruined by boosters but it was for sure more loved and successful than the Reach system.
As for the map design issues, 343i did not make the maps in Halo Reach that was still Bungie. I also might add that AA's and loadouts may have played a large role in the decreased quality of the maps.