When running around inside, and even some exterior areas, the flatness of many materials makes it a bit disorienting gauging how far away you are from a wall, or even if the corridor you are running down turns or not.
I know BBR has a very low-def aesthetic, but might be worth considering if some ambient occlusion, lighting adjustments, and some light texturing could help increase environment readability. Minecraft's is similarly low-def, but utilizes a few tricks to give the player stronger visual feedback on how the environment is shaped.
An example below I grabbed from a stream on YT. If the wasn't in view, how would you gauge how far the pillars are from the player, and where they begin/end?
Love the game btw! Can't wait for release!