Be explicit that open questions are deferred out

text/0000-packages-as-optional-namespaces.md

@@ -214,10 +214,11 @@ Python has a similar coupling of top-level namespaces and modules with the files
 
 # Unresolved questions
 
- - How exactly should the Cargo.toml `lib.name` key work in this world, and how does that integrate with `--extern` and `-L` and sysroots?
- - Should we allow renames like `"foo::bar" = { package = "foo_bar", version = "1.0" }` in Cargo.toml?
- - How precisely should this be represented in the index trie?
- - How we should name the `.crate` file / download URL
+Deferred to tracking issue to be resolved pre-stabilization:
+- How exactly should the Cargo.toml `lib.name` key work in this world, and how does that integrate with `--extern` and `-L` and sysroots?
+- Should we allow renames like `"foo::bar" = { package = "foo_bar", version = "1.0" }` in Cargo.toml?
+- How precisely should this be represented in the index trie?
+- How we should name the `.crate` file / download URL
 
 # Future possibilities