I've been following that mod for about 2 or 3 months and was hoping that Spinningplumbobs would merge their werewolves entirely with EA's, but instead they have decided to make them two different species (SP's lycans and EA's werewolves). I don't know if this is because it was the only option or if SP just wanted to keep their werewolves separate from EA's. It's an amazing mod. I'm just not sure if it gives the effect I'm after. When I get the pack (I'm waiting for the GP to be eligible to go on sale) I probably will give the mod a try but what I'm after is a default replacement of the beast form not an alternative type of werewolf alongside EA's.
I'm not a modder so I have no idea if what I'm looking for is something that can be coded. I realize that the beast form has customizable features that vampire dark forms and/or mermaid forms don't have such as the Cats and Dogs style fur editing feature which might make it hard. I'll keep an eye out for other mods and also check back to this incase anyone shares a mod I've missed.