Racial Trait Disadvantages

[Fyron]

I've always thought that SE4 could use many more advanced racial traits that are penalties rather than bonuses (you get points back for taking them). P&N, Adamant and a few other mods have some good ones, but not quite enough. What ideas do you have for good disadvantage traits that would not require everyone not taking the disadvantage trait to take a 0 point "advantage" trait that leaves them being normal in that area? For example, you could have a trait that makes space yards take 2x as long to build. This would give a SY with 20k minerals build cost. But, the problem is you still have the regular available, so it has to be taken away, made only allowable by a racial trait that normal races have to take. This would get needlessly complex if there are a lot of such traits.