The level might be horrible on legendary but if you look around and stuff it might be the most beautiful and disgusting level bungie has done with Halo and i don't think 343 will top it in level design and art direction now don't call me a hater but just boot up halo 3 and the level cortana and just look around you can see so much going on.
Small note
no i don't hate 343 i just think they should take more time on the art side off it all.
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343 simplified things with forerunner stuff. Every place you go looks so much like the last place you were. And all the maps in multiplayer have awful design. Bungie did that better than anyone. It helps they did it for 10 years