I mostly agree with this. I have owned three mac pros. I use them for development work. I like them because they are fast, well-built, run OS X (which I like), I can put lots of RAM in them, and put a few extra hard drives in with software RAID.
There isn't much about this announcement that excites me. I don't think I need two graphics cards (though maybe 4K will be nicer than I realize). I don't need it to be smaller and I don't really care what it looks like, as long as it is well built. But:
* I have had really good experiences with past mac pros, and poor experiences with hardware from other vendors, so I am reluctant to switch.
* The cost differential of a mac pro vs. an imac is not that great, relative to the cost of development time, so I am likely to give the mac pro the benefit of the doubt. If the benchmarks show it is significantly faster, I will probably just go with it.
I do wonder who is excited about this machine. I think another commenter is right - it is the video editors and high end graphics types this machine is truly built for.