I should first mention this interest is basically unilateral--since we already have so many dependencies, starting a discussion about adding them tends to be less productive than making something and demonstrating the value.

Hello, I'm an admin and dev for FreeCAD, a cross-platform 3D CAD software that uses Qt as an application framework. I'm interested in closer ties to the KDE project in the long term since the adoption of KDE Frameworks into FreeCAD could help prevent reinventing the wheel and boost code quality. However one of the main difficulties with FreeCAD is that it already has a pretty huge amount of dependencies that are quite difficult to maintain across multiple Linux distros, Windows, and Mac, so adding anything to the dependency list would be a difficult proposition and something probably best done in small steps.