I've been inspired to create a modpack based off of a section in the book I am writing. It's also inspired by Crash Landing and Forever Stranded, which, in my opinion, were super fun, but needed something more. The biggest part of this modpack would be a dimension (probably the easiest?) that consisted of one biome and basically nothing else. Like 1.14 buffet, where you get one biome for the entire world.
It would be a variant mixture of Badlands, Badlands Plateau and Desert Hills with cacti and dead bushes. The biggest thing about it however, would be that there is absolutely no stone, dirt, gravel, diorite, andesite or ore. It would be primarily variants of red sand, red sandstone, sand, sandstone, granite and terracotta down to bedrock. There would be caves, but it would just be...well...sandstone/terracotta/granite and nothing actually valuable.
There would be absolutely no water or lava. No ponds, no lakes, no oceans, not even a random underground pool.
There would be extremely rare structures that looked to be ruins of rustic homes with an equally rare chance to spawn a chest inside containing a few supplies such as saplings, seeds, maybe a tool or two. Practically impossible to spawn would be a chest with something good in it, like a Diamond Sword with either half or whole durability remaining. Basically, there were people, but there was no way they could survive against the odds and environment and they all died out quickly.
Husks and Strays would be the only mobs to spawn and they would spawn en masse in night time.
From what I've been told by a friend of mine who has made a couple Minecraft mods himself...on a scale from 1-10, Terrain Gen mods are one of the hardest, so it doesn't appear that I'll be tackling this project on my own for a good few years.
If you'd like to offer tips and ideas, feel free! I have the IntelliJ setup and am currently being tutored in basic modding. (I'm making a Chocolate Bar)