How exactly would the Qt6 port in Krita 6 solve the transform masks chewing up resources issue?
I was most talking about the implementation of 2D camera, but at this point that would be the better option, for waiting until the release of Krita 6.0 in QT6. Because right one, they are more trying to adding some existing features, rather than implemented this feature, with the transformation masks goes the same. You can check the gitlab of Krita development too.