I don't yet have this mod, because I just started a new world, (i'll be sure to add it to my next world!), but this is the coolest mod I have ever seen. It's the first new biome mod, and that lava is a great idea! Here's some suggestions for what the lava could be used for. I also love the idea for hardening lava into stone.
- Steam engines, who needs boilers when you have lava?
- A lava-burning furnace!
- Flamethrower turret ammo!
- Moats! Just retextured walls that look like moats, would keep pesky biters from coming into your base, and maybe even make the moats damage them.
I know how hard some of these things are to add, but if you also think they're good, it would be much appreciated. Good job on the mod!