If 343 Wanted To Copy From Another FPS With Halo 4 And Onwards

Why didn’t they copy Unreal Tournament? It would have been a way better choice than Call of Duty. Plus there were people back then who called Halo CE a bad or poor man’s Unreal Tournament, so it would make sense to make Halo more like UT instead of CoD. I mean, Halo is an arena shooter after all. I’m sure that by making Halo more like UT, it would have been freaking awesome. Sadly that wasn’t the case, and it seems likely it won’t happen.