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.