I've noticed that the races in the game have hard-coded abilities that can't be unpicked, like the Thalan's miniturization bonus and logistics bonus. The custom races however don't get any additional comparable abilities, which makes me ask what is the point of being allowed to make a custom race if they are inherently inferior compaired to the default races?
edit: Err, disregard this post. I just realized that I was wrong, and stupid. Custom races get the logistics bonus too. Weird that the yor get miniturization and logistics. I guess that is balanced out by that fact that most people hate them.