diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index bb523d1f93..9cac6492b4 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -1736,6 +1736,8 @@ LV2Plugin::set_state(const XMLNode& node, int version)
 				prop->value()) << endmsg;
 		}
 
+		// TODO: special case track-templates
+		// (state must be saved with the template)
 		std::string state_file = Glib::build_filename(
 			plugin_dir(),
 			Glib::build_filename(prop->value(), "state.ttl"));
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 9e4e788c67..78eca17397 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -4164,6 +4164,10 @@ Route::save_as_template (const string& path, const string& name)
 	IO::set_name_in_state (*node.children().front(), name);
 
 	tree.set_root (&node);
+	// TODO: special case LV2 plugin state
+	// copy of serialize it. Alternatively:
+	// create a plugin-preset (which can be loaded separately)
+
 	/* return zero on success, non-zero otherwise */
 	return !tree.write (path.c_str());
 }