On an area of 10-15 hectares about a third of the hitherto existing planning will be realised. For example this variant could pick up a continent and display its representatives of carnivores from martens to big cats. But it's also imaginable to concentrate on certain habitats and their predators or another guiding theme.
In that case the number of visitors lies between 100,000 and 200,000 per year. This model needs good transport connections, a catchment area of about 100 kilometres around the location can be expected as source for potential visitors.
Residents, adjacent owners and any other people who could take offence at such a project must be brought onboard right from the beginning, in order to put possible resentments away from the outset.