I have great idea for something that's been lacking for a long time - how about your team implement the basic features people have been requesting for years rather than relying on flashy new features that make for good marketing. I think this would be a something to really think about for future releases so that long-term users like me aren't constantly googling "After Effects alternatives" and looking longingly at how free programmes like Blender listen to the community.
Antoine Autokroma commented
Give more information about set matte
Seriously though fix the set matte