Glad to hear you enjoyed it!
I have a 90% finished adventure called Wanderer - The Dream of Fear that I was planning on launching later this year when I get some more time. In it players explore an ancient pyramid that was once home to an Elven King. It is full of Shadow beings and ancient evils a la Tolkien's nameless things and some new mechanics. New characters, new weapons and armour, new places to explore.
The Under Realm sound cools and would work greatly by leaning into a Moria-style adventure. I'll put it on my to-do list!
Thanks,
- Cody