Damn, I forgot to pre-order.

At this moment your map is a little poorly lit, and so you can use stronger light sources that cover more of it. I barely see any height variation in the open terrain, and I use Coagulation as a bare minimum example. IMO trees are largely ineffective as cover against bullets and are more decorative. Maybe add larger rock chunks in a way that benefits spartan movement. The 90˚ corners of your bases ought to be adjusted to a different angle or have more Forerunner shapes attached to them to draw the eye away.

Try to match the tried and true parts of your source material and reshape them for the best player experience. Keep it up!

 

In that case you might want to replace some rocks with structure. It doesn't have to be 90% natural, as even Valhalla had the large wall for player orientation.