Ιt's an ambitious project, hope it gets completed. Werewolves having their own leveling tree... Forced transformations at full moon etc imo are excellent. It is a great way to make it feel a little like a curse and give a small drawback to the player and great for rp. Ring of Hircine remains the same, it just has a slight chance to transform you when you wear it and after you purify it, minimal.
Oh, I'm not against forced transformations. Not at all. I just think that the Ring of Hircine forcing you to transform (the non-cursed version), is a bit much, especially considering that the Ring of Hircine is supposed to let you
control your lycanthropy. If anything, it should remove forced transformations entirely.
Also, I'm not sure how I feel about the "once every four days" thing. Maybe if the period was extended, say to once a week or so.