I think coldfire hit it on the head. The Amiga community was really what made the machine fun. Don't get me wrong, the Amiga was the coolest thing since sliced bread for a long time, but, that's only part of the story. It really was like a special club, and like most special clubs (the linux club, and the Mac club come to mind ...), outsiders with opposing opinions that didn't center around the Amiga being the best, were not welcome. This was ok though, since the club was more fun when you excluded the people who bought the crappy computers. :-)
I figured this out when I tried to get back into the Amiga full swing some time ago. It's not the machine as much as it is that you have friends who are doing it, and of course, new products, magazines, advancements, etc. help to fuel that fire.
I've been trolling here off and on over the years, and the one thing that I think will kill the Amiga more than anything else, is the shrinking community. It's not anyone's fault really. Let's be honest, we all love the Amiga, but, it's a very outdated platform if your a classic hardware lover like myself. There is never going to be a Jay Minor designed "Amiga 5000", ever. Yes, you can build boxes which run the Amiga OS, but, they are not Amiga's anymore than UAE is an Amiga.
I know I sound pretty gloomy, but, actually I don't feel that way. I am glad that I was around to experience the full life cycle of such an incredible machine being used by some of the smartest and most creative people that I have ever met. Unfortunately, you are correct, there isn't anything ground breaking going on with the Amiga, and chances are, it's probably not going to change much either.
On the other hand though, if you had asked me 5 years ago if there would still be an Amiga.org, or AmiNet mirrors on the internet in 2011, I probably would have said no, I don't think so. I would have been wrong too. There are some real die hard fans out there. I think we just need some who can design hardware as cool as the classic 68xxx stuff and write some new software.
For any hardware guru's out there reading this post, I think network cards for classic Amiga zorro slots that come with a free, robust TCP stack would be a great place to start. ;-)