having every project pressing for time is a problem with project management and not the tools themselves. A little OT I know but something we usually take for granted.
Interesting edit-room tool. How do you see the user base in regards to your tool and competitors? Do you see more people signing up and requesting more features or do you see them coming back to their "old" tools once they tried yours (or others)?
It was also the developer's responsibility not to use DW in a way that would make it spit a mess of code. Just because you could embed a table inside a table of another table it mans you should.
I would think it would be owned by the designer and would be used as a prototype tool (as others mentioned before). I would not use PS for anything else other than to create elements to support the design (crop images, special graphics) but other than that a tool like this would be great to get the project started on the right direction and test the functionality on different browsers without having to involved a dedicated dev into the mix.