Expand Athena justification a bit and sound more confident

README.md

@@ -1,8 +1,8 @@
 ## Justifications
 - Athena
-    - Less up-front configuration involved. I hope.
+    - Less up-front configuration involved.
     - AWS wants to lock you into their ecosystem so it'll be cheaper.
-    - In the future, we can switch from CSV to JSON or Parquet or mix and match without any overhead.
+    - In the future, we can switch from CSV to JSON or Parquet or mix and match without any overhead like rewriting the /load endpoints to use a different SQL flavor or parsing library.
 - API Gateway
     - Rate limiting and caching built-in
     - Abstracts interfacing with the API away from raw lambda invocation URLs