diff --git a/COMPOSITE_TODO b/COMPOSITE_TODO
index 2ee635d6cb..b3fc6463ec 100644
--- a/COMPOSITE_TODO
+++ b/COMPOSITE_TODO
@@ -261,3 +261,6 @@ Effects TODO
 
 + EffectWindow should be completely opaque when kept as the only API for effects
     - no inlines, etc.
+
++ merge fadein and fadeout effects
+    - so that they don't conflict and share the progress