I guess it basically amounts to this: Is the community ready to pay another 10000 to 15000 Euros for a port of the GTK? It would definitely be great to have as it is the base for another plethora of applications like Pidgin, GIMP, GNU Cash, Avidemux, XSane, etc. However, collecting the money for the Qt 4 port wasn't exactly easy, so I have my doubts.