diff --git a/Config-system-requirements.md b/Config-system-requirements.md
index 2181ff0..6489bd4 100644
--- a/Config-system-requirements.md
+++ b/Config-system-requirements.md
@@ -19,7 +19,11 @@ Use-cases:
 - [ ] Validate configuration - before server (re)start
 - [ ] Start a server - should not take ages to parse & use config from disk
 - [ ] Retrieve full running configuration
-- [ ] Retrieve values modified in local config (i.e. values which are inherited from default)
+- [ ] Retrieve all values modified in local config (i.e. values which are inherited from default)
+   - [ ] possibly without starting the server itself?
+- [ ] Retrieve a single subtree from config (e.g. config for zone `example.com`)
+   - [ ] possibly without starting the server itself?
+- [ ] Retrieve a single value from config
    - [ ] possibly without starting the server itself?
 - [ ] Add or remove a zone, with all its config values
 - [ ] Change a top-level config object shared by many zones - e.g. `primaries`, `key` etc.