It'd be interesting to see a Qt port. Aside from the cross platform benefits, there tends to be a much larger population of developers on Mac and Linux who could contribute things like broker plugins. Plus, as someone working on a broker plugin right now, developing anything for Windows is pure hell. Implementing the functionality required for my broker took me ~an hour on my Mac (in Python however). Meanwhile, 4 days into writing the Windows DLL I've barely got the dependencies I need installed.