I have a big savannah habitat with 6 different species and 5 five star keepers assigned to it. It usually works alright but once in a while all the animals start starving and I lose several animals. I believe this could be solved by allowing multiple keepers to place food a time so the feeders are filled quicker, instead of only one keeper than has to lug his bucket all over the place (I have placed all the feeders close to the habitat entrance and each other to try an mitigate the issue). Another issue is that if there's a keeper already in the habitat cleaning poop, I cannot summon a keeper to fill the troughs. Allowing multiple keepers to work in a habitat at a time would be a great boon for large habitats.