diff --git a/todo.md b/todo.md
index 982e189..5391452 100644
--- a/todo.md
+++ b/todo.md
@@ -10,5 +10,21 @@
 9. generation of simplified chunks 
 10. separate LOD radiuses for different LOD levels
 11. partial chunk loading and unloading.
+12. block change handling: recalculate only the relevant quads
 
-# directional light
+# misc graphics
+1. implement possibilities for 6 different surfaces for a tile, e.g a branch tile should have 4 bark surfaces and 2 inner surfaces 
+2. implement random rotation and reflection of surfaces
+3. implement fixed rotation and reflection of surfaces
+4. implement custom models, e.g a tall grass tile is a model with two planes crossing in the middle (see: minecraft). implement optional greedy meshing for such models; e.g tall grass textures could fuse together diagonally and grass could have 2 layers who could mesh as well.
+5. implement metallicity (e.g block of iron) (?, discuss)
+6. implement random shininess (e.g rough diamond block, would sparkle as you move across, see purple rocks in PEAK's Alpine biome)
+7. implement emissive textures (e.g a computer screen, see minecraft's enderman/spider eyes and sculk blocks)
+8. implement bloom effect (see gregtech's glowing EBF's)
+
+# directional sun/moonlight
+1. discuss implementation
+
+# tooling
+1. benchmarking step in build.zig: benchmark chunk meshing, generation, and similar tasks which will need to be performed at scale
+2. texturepack compiler: something that would compile minecraft-style texturepacks into a format that could be more suited for in game usage.