That far Koolmoves has been pretty incredible for building my project's website but few things have been pretty time consuming.
With the action script support, Koolmoves is *close* to perfection.

The most time consuming task with Koolmoves is to keep size consistent for several shapes: eg layering shapes and making them the same size, getting straight lines on the shapes. Everything worked perfectly while I had the snap to grid but after, I did not find a consistent way to edit :-(

* better snap to grid: I wish the snap to grid could work for all items: when resizing a shape, the points are not snapping to the grid + snap to grid with invisible grid would be great
* also after copying a shape, the copy is not snapping to grid the same way: the anchor seems to have changed
* better way to select shapes: I have a page with several shapes layered on top of each others and I have a hard time selecting only one point of one shape
* copy a frame without duplicating the shapes: that far I did not find out how to copy and paste a frame without duplicating the shapes
* set a shape position for all frames: if you move the shape in one frame, even with the option to apply changes to "all frames" the position of the first edited frame stays different.
* I had several crashes: after saving a project, and on resizing the movie frame toolbox.