I am not sure that "Adventurous" and "Traditional" go hand in hand in regards to Thanksgiving dining, but if I had to give it a shot, I would suggest Artist Point in the Wilderness Lodge. In my family we have all our Christmas decorations up to but not including my dining area completed, so we do have a mix of Christmas and Fall decor out. WL probably does not have the Fall decor remaining but it will feel very festive and homey. I honestly do not know if there is a traditional Thanksgiving offering there, but you will be able to order soem interesting meals.
We actually choose not to have a traditional Thanksgiving meal when we are in Disney for that Holiday. I know that no matter how good the meal would be, it is not mine, so we do something as different as possible. The luau was fun!