I honestly have not seen a completely satisfying Predalien design. Even outside AVPR there's a tendency to make them mini-Queens with too many Predator traits. All it really needs to be is a big Warrior with Giger-ized mandibles. It's a 'hybrid' in the same way the Alien 3 creature was. You don't see dog (or ox) traits overwhelming the design, it still looks and operates as an Alien.