the "customization points" dont work, I changed them from 0 to 100, ingame happens absolutely nothing. I keep my 10 points all the time
changings the abilities result in nothing too (at least at my side). example: the custom race have 25 soldiering 25 loyalty and 6 logistics. Lets say you edit planet quality to 10 and start the game, now you have population growth 10, but only 7 customization points left.
On the other hand, you could set soldiering to 0 (thats actualy 1 point) and set population growth to 10 (1 point too). actualy you should be good with this, but you will not. Well, I have had just 9 customization point left on race selection.
So this seems to be somehow hardcoded. But I havent tested it with 1.2, so maybe it is working now. Btw, you could edit antything and start the game, you could end up with -100 customization points, but make sure you dont hit the "clear" or "reset" button