I think the biggest thing they could do to improve the animals' care is just taking the time to make sure the employees know how to care for them. When we adopted my BP, I could tell the woman doing the adopting really cared and wanted her to go to a good home (she still asks about her whenever we go in there) but several things she said made it clear she didn't know a lot about snakes. Apparently she keeps fish though, and I've actually seen her basically tell someone 'no' when they wanted to buy a fish and put it in the wrong sort of environment. I think someone like that would take care of snakes/lizards/frogs well too if they had the knowledge to do so.