I'd love to join this; I hardly see any fantasy roleplays on FH, which is truly disappointing. Fantasy RPs are the most unique because of how much variety is available.
And a suggestion: Perhaps there could be "tiers" of some kind? Then you could have both big cats and domestic cats as different tiers. I don't know if this would work any way with what you've got in mind, but it is just a suggestion, after all.
Incorporating BlazingJosh's idea with the multiple species, I was planning on making three different species or 'races' available to play. A dragon based, a canine based, and a feline based. Not necessarily wolves/lions, but the same type concept, if I'm making any sense right now. Members would be able to make anything from a fox to a wolf, or a cat to a lion, and it would be considered the same species. It will make way more sense when I'm able to plan it out fully, but basically, you're pretty much going to be able to create whatever you want.
Also, I'll notify everyone when the roleplay is up and running! I've already started making a map. cx