I think you could accomplish both by just making them a habitat animal. There is so much more customization, and we have walkthrough habitats. To me, making them WE animals just holds them back.Sloths are a difficult one to approach because there is plenty of sloths in exhibit style rooms with a viewing panel and of course plenty in much larger diverse habitats
Personally for me, the current walkthrough exhibits are great for bats and butterflies, and maybe some small birds. But I really think we need more customizable enclosures for larger birds.