The issue simply lies in the fact that there are not nearly enough mature, proven bulls in NA to sustain a genetically healthy population using them alone. There's Jackson, Mabu, Maclean and Callee as truly successful bulls, and that's...really it. There are a few other promising bulls at other facilities but the options are extremely slim, and there's no reason to move these emerging breeding bulls when they've only had a calf or so a-piece thus far.
As much as facilities like San Diego would LIKE a more experienced bull, Musi is...kind of one of the only available bachelors that SHOULD be able to develop into a sturdy, strong breeding bull. His social stunting is certianly a roadblock and I agree his transfer back was a huge gamble, but he's evidently improving. Bringing in another young bull (really the ONLY option in NA at this point given the stark amount of older non-breeders) would be the same gamble.
I'm no expert on the facility, but others have pointed out that Musi will very likely never share the same space as his mother for the forseeable future, so her being a variable in the females' acceptance of him shouldn't be an issue.
That being said, further discussion of this should really be moved to the speculation thread. It's already crowding up the population thread as it is, and distracts from the initial shared news about Musi!
