I would love to have forced lunar transformations rather than manually transform myself every night. I think it's a brilliant idea since I would love downsides as well to go with the upsides, then it would have the blessing/curse idea going on.
I'd love it too, but just on a full moon and only when your in the moon light, that's how it's spose to work. And without warning ( personal preference ), you could be in the middle of a quest and if caught in the light of the full moon you change, there's the curse side. Many will complain about not getting warnings but it's not that hard to track the moon phases, their both full on the 26th of every month( still in the process of mapping phases and positions ) so there's your visual cue, when the moon is 3/4 full that means you have a day or two before the moons full.