By which Halo fans?
The lame people who cant get over Halo CE? or how about that cheaters heaven known as Halo 2? Or do you mean the slow as shit Halo 3? Or perhaps you mean the Bloom and loadout fans of Halo from Reach?
H5 campaign suffered, but MP wise, it shits all over previous games.
This, hope they will take their time with Halo 6 campaign and deliver on it.
Multiplayer just needs to launch with Halo 5 features and gameplay and i'll be a happy camper.