The ability to import/export integration settings would be a great step towards making the IDE more plugable. The integration system is already very well-implemented, but this additional capability would really expand on its strengths. Extra points for a file format which you could drop into a directory that would get loaded by PhpED for easy redistribution/installation of integration extensions.
I'm new to PhpED, so it's possible something like this is doable already -- if so, please let me know!