We are working on a revamped SkookumIDE using the same Slate user interface system used by the Unreal Engine 4 editor.
It will allow us to make much more sophisticated authoring, analysis and debugging features. It will also pave the way to the SkookumIDE being on multiple platforms - it will initially be available for Windows PC, then Mac OS/X and then Linux.
This will also enable us to fix several existing problems in the current SkookumIDE such as slow typing when an edit box has lots of text. It should also be able to better handle non-western character sets.
Expect the first release this fall.