Thanks for the feedback and such!
Optional game over scenes are planned for some point, maybe for v0.9 (next release is going to be v0.8), although I will be sticking to the safe vore theme. There'll eventually be a good and bad ending with every predator, either through being willing permanent prey or defeated permanent prey. A long ways away when I release the source code, it should be possible for others to add digestion-related stuff, but for the sake of time and preference I personally won't add this.
Next update may have something for you as far as playing as other characters. Design-wise, I'd say the majority of all characters, Amelia and predators, are going to be fairly humanoid, except I guess when a monster girl is half human and half animal. The Cat girl is the furthest I see character designs going for a full humanoid predator. Otherwise, feral predators are sprinkled in for some variety.