When a sequel to a huge franchise of gamesis drastically changed or made solely for “experimentation” the end result could come off as good or bad. However even if the new gameplay was just as good as the second coming of Jesus Christ, you will still end up alienating your hardcore fans and split the community.
A prime example of this is the sonic the hedgehog franchise. When it started going 3D it went through so much experimentation and gameplay styles including boost, adventure, teamwork, and guns, that it tore it’s fanbase apart and created such a massive divide and drove off so many people from the classic era it became impossible for the fans to settle to one style.
Halo is going through a similar thing. It started with reach. It introduced AA and bloom. While it didn’t have as much of an impact as later games. It still drove off a lot of people.
Then came halo 4 which seemed to start to head to the call of duty direction. Halo 4 brought sprint (that’s not AA Anyway), Loadouts, AA’s which were now OP, Ordanance and a completly different art style.
Halo 5 goes even further. Most of the things I listed for 4 were just shoved in to Warzone. Halo 5 also brought unlimited sprint, ADS, Ground-pound, charging, Clamber, Microtransactions, An unlock system completly based on RNG and A campaign that mostly revolves around 3 characters no one cares about and an old character awkwardly shoved in.
These 3 games drastically changed the formula fans were used to, which alienated the fanbase and split it similarly to the sonic the hedgehog fanbase. Now, no body can agree on one thing and the majority of the old fans have jumped ship.
I understand 343 tried to get halo 5 to appeal to a new generation but by ripping off an already established franchise and pulling it off worse, most of the new gamers 343 tried to draw will just go back to cod. And sure enough that’s exactly what happened.
I also understand that halo can’t just copy and paste the halo 3 style forever. But your supposed to build up on the established style to add something fresh, not just say -Yoink- it and rip off other shooters. Halo 2/3 did that fine. They added new mechanics, weapons, vechiles ETC, that Makes the new installment fresh without completely changing the style.
Overall, by experimenting with the franchise too much, 343 have torn the halo fanbase apart.