good points for all but what about the slow loris, my only worry for them would be stress. Here are some more options: Southern Brown Tortoise, Indian Star Tortoise, Lion-Tailed Macaque, Northern Treeshrew, Tufted Deer, Reeves Muntjac, and Giant cloud rat
Well, now we have the similar problem of the animals having to be small enough (Tufted deer and Muntjacs would be way too big), Ground based (Giant cloud rat and northern treeshrew would climb out and escape), not repetitive (Star tortoise and Brown tortoise would be too similar to the South American tortoise enclosure down the path), and also day active (Slow lorises are nocturnal and wouldn't be seen, along with being arboreal)

