diff --git a/TODO.md b/TODO.md
index 5b4225f..f7a8281 100644
--- a/TODO.md
+++ b/TODO.md
@@ -6,4 +6,7 @@ Global parameters to control encoder settings:
   - Constant term
   - Linear term
 - Number of quants to keep, per tile.
-- Whether to use wide or packed representation for the thumbnail block
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+- Whether to use wide or packed representation for the thumbnail block
+Interleave layers instead of having them consecutively.
+Maybe have a second instance of the global parameters block for the alpha channel.
+Actually support terminating early for "progressive" loads
\ No newline at end of file