Listen, I love classic halo multiplayer as much as the next guy, but for those who are complaining about the addition of the thrust and all that it's fine. I'll admit I liked it better the old way for the most part but if you're still going on about them ruining the multiplayer it's cause you suck at it. Also having done the game on legendary (cause it isn't hard), most of the weapons are fine and not completely useless like everyone says they are. I can understand the "disconnect" between H4 and H5 with the changing of weapons and that but a lot of them are still fine to use on the hardest difficulty. The req system though, while I like the weapons and vehicles and think they're neat, the fact they are just there for warzone is irritating. Although I'd like to point out that a fair few if not most of the weapons actually showed up in the campaign and i thought they were awesome. It is just the 24 types of the same damn warthog that is more than too much. Music was pretty meh I would agree except for "The trials" which is just the closest thing in the game to the original soundtrack we all know and love, so that speaks for itself. The campaign story wise though is just absolute flaming garbage and nobody should defend it.
TL;DR - Campaign Story = Flaming Garbage
Campaign OST = Meh (one or two good ones)
Multiplayer Changes = Aren't super horrible, people that say they are just suck at faster paced multiplayer (I still like the old style though)
New Weapon and Vehicle variation = Weapons great and vehicles too much