Hi Sven,
One general question I do have about the authoring tool is whether developers will be able to get access to the underlying code? One of the reasons why Dreamweaver became so popular was because it enabled its user base to peak 'under the hood'.
In fact, many now seasoned web designers and developers, started off by inspecting the mark-up, CSS and Javascript code generated in tools such as Dreamweaver and playing around to improve their web dev. skills.
I am not suggesting that this would need to be a 1.0 feature but something you might want to consider for a future version.
- Mark