Capability to add images by dragging,just like you'd do in Photoshop from Bridge without having to make a library or deal with different kinds of files.

Edittable templates,that way it would be easier for beginers(like me) to learn web development

A tool option to make a gallery(or something like that) from a buch of images,video or audio files.

Please consider adding native PNG support from Fireworks. At the moment, designers who develop prototypes in Fireworks choose to this path over Photoshop because of its usability and ease of use for concepts designs.

In order to port Fireworks PNG files into Catalyst, designers must first export the files into a .PSD, or .AI format. As you know, this process is not ideal seeing that it introduces fidelity issues, and can changes the character of the design.

Integrating native PNG support, on top of the current .AI, and .PSD support, will not only ensure the shelf life of Fireworks, but provide a quick alternative to designing rich internet application prototypes for clients.

I absolutely love Flash Catalyst, its fundamental ideas, and principles.  Basically, you can make everything yourself with this software.  I think that the primitive shapes, (rectangle, ellipse, line...) are too primitive for Flash Catalyst, and that this library of drawing tools should be expanded.  Not everything that we draw is that basic.

Also, I think that if Flash Catalyst was able to create native Windows Applications, it would be a much neater software.  Right now, programs like Visual Studio don't give developers much power over the design of their programs, and if these tools could be applied to making software, I think it would be a great step forward.