I had the original Snake Mountain as a kid, and honestly, compared to Grayskull (which I also had) it wasn't great, there wasn't much to 'do' with it, and I often didn't have batteries to work the electronics. Something like this that I can set up next to Grayskull for my nephew or silly photos will work fine, and I can use the two sides external to be both Snake Mountain and the Fright Zone (a bit of a mental repurposing I did back then to compensate for what I didn't have, since I had no idea what that big face had to do with snakes).
What I did back then and may redo now but even better, was to set Grayskull and Snake Mountain side by side, making a very big set of scenery for ideas.