I also wish we stayed as a werewolf all night. From 9:00 PM on full moons to 6:00 am. In the morning, your character transforms back to human form. It would be awesome if this was in place.
Agreed, I think your character should be forced into Werewolf form at night for the duration of each full moon, otherwise it's just a gimmick to keep from getting diseases. It would make the player more aware of where they are and what's happening with the moon, so that they can seek shelter somewhere if necessary, or just reak havoc at night.
Also, you should not be recognisable by anyone except Companions while you're in Werewolf form. Similarly, if you get spotted as a Werewolf, but hightail it out of there and transform back into whatever your normal form is, people shouldn't know it was you who was the Werewolf, (unless they witness you changing). I had some fun as a Werewolf once, didn't go into any Holds, but did go close to Windhelm, and was whacked with a fine.
I never change into Beast form these days, and am torn between using it as an anti-Disease perk, or curing myself and getting a proper night's sleep for the first time in ages.