my personal belief is that the city zoos that excel into the next century will be the ones with an open range zoo attached to it (as is the situation with san diego, london, melbourne, adelaide and taronga to name a few).
what i want to see is better distinction of the two styles of zoos made by the zoos themselves. i don't belive all this rubbish about public acceptance, you take giraffes and elephants from melbourne and you'll just get more visitors out a werribee. same zoo board, same money. this frees up space at city zoos and allows them to not only display and manage the speces they do mainatain more effectively, it also allows for larger enclosure sizes. ideally, there may be one or two average sized display enclosures for sunbears, but behind the scenes is a much, much, larger habitat that is shared by both bears on a rotational basis, in which public viewing is not a concern at all.....and i bet they would breed better too!
of course this may seem like radical thinking to some and a bit extreme but really, i think it solves much of the dilemma. better design of facilities and better management all really goes hand in hand with better quality of life for the animals. i don't want to see another rigo type situation arise in which not only is the animal unable to be integrated with others, he is also, due to prro facilities, forced to live, permanently in an low standard enclosure.