This was a great move by Adelaide Zoo, as I remember being shocked at just how poor the ape enclosures were on my visit in 2007. I believe that there were only 2-3 chimpanzees at the zoo then (awaiting the development of a new chimp habitat at Monarto) and perhaps no gorillas...but the demolishing of the exhibits in favour of a new, $3 million educational Envirodome is one of the best things that the zoo could have done. Toss in the new multi-million dollar entrance and two giant panda enclosures and this little zoo is probably much improved now.
Definitely improved, I was there last week. Couldn't find the old ape enclosures no matter how I tried, but there did seem o be this new building I didn't remember.
I don't know how practical the staff find the new entrance complex, but it certainly looks good.