Cappuccino said:

I think if this is introduced, it should only be allowed for WB crosses. As in the RL KNN registry the mares (or stallions) that are already approved for WB registeries can produce KNN when bred to other KNNs (granted foal without color are still KNN but I could see us being flooded with "plain" KNNs, I digress)

TB/AA/Appaloosa/PRE mares can be inspected by the KNN registry and approved (or not) to produce KNNs in various books (TB, Arabians can produce main book, other breeds, they must produce filies as the colts wont be eligible - not that its related to this game since we dont have those breeds) if those mares have already been approved by a WB registry then the KNN will not need to inspect...

I say all that to say, I think WB should be the only allowable out cross...and TBH I think when the KNNs are plain the foal should be WB not SH (maybe unpopular opinion)