Stock is a great idea to impart extra flavour - you could add toasted nuts and dried fruits and spices like cinnamon or cumin or cloves (or mixtures of spices) if you are doing something middle eastern. Or you could flavour it with tomatoes and herbs...I suppose it depends on what you are serving it with. Did someone mention salad? You could make a kind of tabbouleh with lots of parsley and mint, tomatoes, cucumber, red or spring onion, and dress it with olive oil and lemon juice. Now I feel like cooking it!