I think it looks good, maybe 'boring' in that it looks similar to other chimp exhibits, but I personally haven't seen many so wouldn't really know. I do know however that it's a hundred times better than what Tsotsi and the girls were living in at Adelaide Zoo so it has a thumbs up from me!
I think its still just hotwire, hopefully it will keep them in.
In Adelaide Zoo, the chimps lived in a small-ish enclosure where the envirodome is now. Next to it were the old orangutan and tiger enclosures (which became the gorilla and 'human zoo' enclosures for a short while)