Thanks a lot for the feedback!
You're not wrong, I was worried it would feel incomplete... but I loved the Crawler and Medusa idea too much to exclude. One of my favorite things is using cave systems as a sort of mega-dungeon that I can perpetually add to, but I realized (too late) that it's probably not the best fit for a jam.. though a cave megadungeon jam would be really fun.
All that to say, YES, I do plan to release the Crawler Caves in the future! As well as expanding upon The Nest with more tables, NPCs, and more encounters, and more more.