Basically a void dimension mod (I'd like feedback and ideas)

I'm working on a mod called Rock Bottom and it's basically a void dimension. When you go below -10 on your y coordinate, you get transfered to the Rock Bottom dimension. This dimension is full of blocks and items that are all named after synonyms for hate, anguish, or sorrow. There's Spite Soil, Loathing Sand, Odium Ore, etc. I would simply like ideas for mechanics or interesting blocks to add to the mod. All ideas are welcome though. I'm intentionally leaving things vague because I think some of it will be a cool surprise.