At least one hound could be made from a mishmash of remains: 5-7 legs, two heads, three tails (one of them chopped off), and a puppy growing out of its back. Different models for the ghosts, and one shouldn't fly, but flicker and teleport like a glitched hologram. And not just a gravedigger without legs on a wheeled board. I'm not getting paid, so I won't come up with any more ideas.
With mobile visuals, they could have focused on high-quality, diverse creatures, animations, effects, and sound (which hasn't been implemented yet).