First of all, I wanted to say that I love your mod, nice work! There was just one major bug that I encountered so far.

As you mentioned in your description you are silenced while in any form. The issue that occurred for me was that another ability removed the silence effect from my shapeshifted character, and I was suddenly able to transform into a second animal form. I didn't really pay attention at that moment, and instead of cleansing my form, and transforming into a new one, I directly transformed into another form. This, however, made the first transformation irreversible, because if I used "Cleanse Form" now I was only able to transform back into the first form. Unfortunately, it became impossible to go back to the human form.

At first, I deemed it to be rather awesome to be in Werewolf form forever, but I got punished for that quite heavily, because you lose the ability to pick locks, repair items, etc. in werewolf form. Beyond that the critical drawback of this permanent transformation was that I was no longer able to continue the main quest, because my god refused to talk to me in shapeshifted form. This meant that I was stuck in the Spirit world forever, with no way out, and no way to proceed. Quite sufficient time to atone for my double transformation sin ^^.

TLDR: Please mention in your description that transforming from one form into another, without cleansing the first form, will end up in disaster (at least if you started as a werewolf, I guess).