Just thought I'd bring this thread back as I've been away for a while and found the past few pages in this topic quite interesting.
I've used AC9, and I do think it's a good solid update. However, in my field of work it doesn't hold that many benefits for me - which is conceptual modelling, master planning and urban design. For me, improvements in management of linked models, improved layer and story settings, improved modelling features and extended boolean tools (which I use all the time) are my main criteria. That said, AC9 is still worth the update IMHO.
Not everyone will be satisfied and everyone has different needs. Although AC is designed for Architects there are a lot of people and companies out there who use AC who aren't architects. It's a great programme and I'm glad I use it despite it's limitation and failings. But with AC9 it's heading in the right direction and I look forward to seeing where it goes from here
Oh and lastly, I know the frustration with the wish list hence I made archicadideas.com to try to put things in perspective a little and bring some coherency to the list - and to get my wish out there as well.
James Badcock
Graphisoft Senior Product Manager