Now that ic2 has added in the scuba helmet and hazmat suit I've been thinking about uses for it. Something that I've come up with that I think would be cool is for there to be:
A) possibly some underwater shipwrecks/dungeons with cool loot and
flooded caves.
These caves would basically be normal vanilla caves, just filled with water so that monsters don't spawn but there's instead the risk of drowning, and of course the decreased mining speed and lower visibility of water.
Is there any chance that someone could make this mod?