IMO, if u expanded the elephant yard into where the babirusa are and then refurbished the barn and outdoor yard, NY can be a bachelor bull home
I think that many zoos will start leaning towards male herds since you need less individuals, and this space, than for a breeding herd. So I see more than a few city zoos implementing this rather than phasing out elephants all together
Also, speaking of elephants in general, I read in an article that enrichment and social opportunities matter more than flat space