I have made mooncakes only once. However, the only reason I made them (oblivious to the interesting history and lore) is because I found one of the beautiful molds at a funky kitchenware place in San Francisco. Had to have it....had to try it. That's exactly the type I made, Lise. The Lotus seed paste with walnuts and the red bean ones.
They aren't TOO hard to make, but they are fussy. The two kinds of pastry dough that they are wrapped in is the tricky part. (kind of the same method as puff pastry)