I have played every Halo since the first one. Each experience has been different and flawed in it’s own right. I feel as though adapting and growing with the game is an almost impossible feat that is rarely accomplished. You have done it.
The thing about shooters is, it is about playing for skill. So when you add cosmetics items inevitably you are going to get flak for being too much like call of duty or an RPG or whatever name they decide to call you that day. But I am a firm believer in evolution and not fighting change. Evidently you are too.
First off, I know you will eventually be releasing classic match types and maps but I also understand from a marketing perspective how doing that immediately would just lose you money. Not to mention, you have put a lot of time and energy into building 343’s halo experience and want to push players to try it. We are all creatures of Habit so I understand the need to. Except SWAT. Don’t get rid of that weekly please. 
This campaign actually had a heart. It was refreshing and heart wrenching. I am looking forward to stepping out of the role of being spartan 117 and hearing more about John and his humanity (I think that is where you are headed.) Also interested on how you will avoid his flash clone.
Match making is smooth and rewarding, the campaign is compelling. Spartan Ops is a bit lacking but, I like any excuse to kill smart AI and Melee hunters to death on easy. In conclusion, keep up the good work and don’t run yourself rampant.