More maps, more unique maps, more nature maps, maps with more limited lines of sight. They nailed the gameplay in multiplayer, but arena is lacking content-wise, even if the number looks decent on paper. There are 5 breakout maps all forge, like 8 or 9 standard arena maps 1 of which is forge, 1 looks like it should be forge (coliseum), 1 is a remake (Truth) with it's own variant, plus another map has a variant, and then the rest of the maps have very similar UNSC structures to them. So when it comes to new, non-forge, non remade/non-variant maps, we're left with almost nothing.