At this point moving to Qt for something as large as Inkscape would be too massive I imagine. Just +1'ing your point. Inkscape's UI uses so much common element

At this point moving to Qt for something as large as Inkscape would be too massive I imagine. Just +1'ing your point. Inkscape's UI uses so much common elements out of GTK too that it would really hose some of the developed creature comforts the community has got used to. It'd be a huge project with not a lot of ROI to go and redo all the chrome.