I think you should still try, although drako's does look very good, too me it just doesnt remind of nightmare enough. The more cartooney style of Ravecat seems to fit more with nightmare's style, Drako's seems a bit too realistic. I think both packs are nice so far but i think this one should be continued for the sake of choice between the two.
I'm currently working on completely finishing this pack based off of what Ravecat started. The terrain is nearly finished, then I'll continue on with items and mobs. With any luck, it will be ready for October.