As far as I got, Blender’s features for masks are very good, but then they fall short when you want to tweak the animation curve for animated masks because, well, there are no curves… it’s all linear, they just won’t appear in the graph editor.
So I was wondering if there is some other application that does that, be it specialised or not, maybe specialised for compositing would be a plus actually, considering all the video editing features that are left in the dust by Blender, because I assume the big players don’t care for them and rather fund for the development of all the 3D capabilities, which I care about very little for what I usually do, so I’m not seeing any improvements on that side anytime soon