[VariousRen]

An interesting idea that I'm considering adding is having the dwarves give birth to their own slave/labour class. True dwarves live a long time, and so they can't just have kids all the time (same problem as with elves, but to a lesser degree since Dwarves do eventually die). Most of their offspring (say 9 out of 10) are larger, sterile, dumber creatures. Dwarves are very good at industry because their race has a built in labour class that is nearly inexaustable.