acknowledge an expansion of scope

see rubric issue [w3c#54](/w3c/issues/54).

index.html

@@ -122,10 +122,16 @@
       illuminate favorable or unfavorable consequences for their needs.
     </p>
     <p>
-      While this rubric allows the evaluation of many aspects of decentralization of
-      a DID Method, it is not exhaustive, and does not cover other factors that may
-      affect selection or adoption of a particular Method, such as privacy, security,
-      reliability, or efficiency.
+      This rubric is a collection of criteria for creating Evaluation
+      Reports that assist you, the Evaluator, in choosing a DID
+      Method.
+
+      While this rubric assists in the evaluation of many aspects of a
+      DID Method, it is not yet exhaustive.
+
+      Criteria are refereed by the rubric editors, with a bias to
+      inclusion when well-formed and not irrelevant, but Evaluation
+      Reports invite opinions from anyone.
     </p>
   </section>
 
@@ -4326,4 +4332,4 @@ <h2>Acknowledgements</h2>
   </section> <!-- appendix acknowledgements -->
 </body>
 
-</html>
+</html>