Mandarin was introduced into the game 9 days ago and, so far, it seems almost impossible to pass. Taking a peek at the few Mandarin studs out there, out of 437 so far only one has inherited the base, and it appears it was due to a Crunchy Worm and not naturally. Using these, it appears that Mandarin has a 0,002% chance of passing - and yet, it could be much, much less, because that single cub did not inherit Mandarin naturally. Why does this happen? Aside from the fact that hyrid bases have a penalty of sorts when none of the parents are the hybrid the base came from, Mandarin is a Medium base, which makes it even more difficult to pass.

With that in mind, I think it would be fairer to those breeding for it for its chances to be increased, not a lot so it doesn't lose its appeal/value but enough so it's not impossible to breed without items and hybrid parents.

Edit: 415 cubs offspring of non Tigon studs and we still have the single mandarin cub product of a Crunchy Worm.