So, I have this amazing recipe as a base thanks to Simply Recipes:

1 1/2 cups (210g) flour
1/2 teaspoon of salt
1 cup (200 g) sugar
1 teaspoon baking soda
1 cup (240 ml) pumpkin purée
1/2 cup (120 ml) olive oil
2 eggs, beaten
1/4 cup water
1/2 teaspoon nutmeg
1/2 teaspoon cinnamon
1/2 teaspoon allspice
1/2 cup (120 ml) chopped walnuts

If I swapped out the olive oil for cream cheese, what do you think would happen? Good idea, or really bad? I think I'll try it this weekend. If you have any prior experience with such substitions, I'd appreciate your feedback. If it's good I'll definitely post an update. If it's not, I will hide in shame. :P