Wardens make amazing healers with the use of Budding Seeds (morph of Healing Seeds), the Healing Thicket ultimate and Expansive Frost Cloak. A simple restoration staff on a different class will be inferior when it comes to area-of-effect healing.
Warden is my least fav also. I use Alcast and Dottz builds which are kinda fun. Another thing you could do is add a bit of rp to your character to make it seem more fun. I'm using a frost build for my magden and I rp her as a frost mage