Atlas is too hard
Actually, Atlas is relatively easy to use, but the configuration sucks.
First off, what is wrong with the people in Redmond that they can't just give us a zip full of files. Why, in a world of Xcopy deployment, do I need these stupid installers just to get an assembly out?
Second, the configuration is borderline ridiculous. I realize we're in CTP mode right now, but why, oh why, are there dozens of lines that we need to add to web.config just to get this stuff to run? It's too much work. Extra work is bad.
The tools are pretty cool, but the deployment needs to get much more simple to be really useful.