Sadly, I only discovered how to properly organize the distribution between IWRAM and EWRAM just a couple of days before the deadline. There's also the fact that the levels aren't really optimized for the GBA yet. I'm still working on a level editor that will allow me to design efficient stuff by default.
But knowing that the atmosphere and looks are on the right place really helps me designing the tools to better serve it. I was particularly proud of how it suggests lightning and stuff where there's nothing. I might add some dynamic (or maybe baked) lightning in the future, since it seems to really enrich the experience.