I added garlic and lemon juice to the ricotta mixture and also added garlic to the onion-carrot topping, but even loaded with herbs this was still a little too bland for my taste. I will try adding sautéed mushrooms (or maybe parsnips?) to the top next time.
Edit: this was more delicious and flavorful eaten cold from the fridge the next day. I'd recommend you chill before eating.
