diff --git a/docs/index.md b/docs/index.md
index 84063c1..153816e 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -7,7 +7,9 @@ It aims to be a reference implementation of the OME-zarr specification.
 
 This package is designed with the following guiding principles:
 
-- Slim, with as few dependencies as possible
 - Strict adherence to the OME-zarr specification
+- A usable set of Python classes for reading and writing and interacting with OME-zarr metadata
 - A separate object for each version of the OME-zarr specification
 - Data operations are out of scope
+
+We are trying to make this as usable and useful as possible while still complying with the OME-zarr specification.