After playing the game for almost a week and completing camapign, I do not see what is so bad in this game besides a few minor bugs and things 343 messed up in. Other than that, this is way better than Halo 4.
The only problem I have is the lack of armor customization, like what Halo Reach had, ranking is horrid, & every Promethean weapon has been changed or altered, especially the boltock.