With a full set of hazmat armor, not only is it impossible for you to die in lava or poison or anything, the hazmat suit TAKES NO DAMAGE. It would be more realistic if the hazmat armor actually took damage. if there is a reason why it doesn't do that, please do tell me.
As for the scuba and compressed air cells, I believe it should be reworked.
I believe scuba air tanks are actually put on your back and in industrialcraft, you just have to put compressed air cells in your inventory and you can breathe underwater with a full set of hazmat armor.
I thought that was really stupid, so I thought of something:
There is a new block (not sure what it would be called) that would accept compressed air cells and in the other slot, you would have a slot for the air tank.
The air tank is a new item I thought of that works like a batpack/jetpack/CFpack in which it stores air from compressed air cells. I guess it can accept a pretty big deal of air cells.
So with the new machine, you put the air cells in one slot and the air tank in the other and that is where the scuba helmet is going to get air from (the air tank)
If there is a particular reason why it is the way it is currently, please do tell me.
Feedback is appreciated. Thanks for reading!!!