Animated Vector Variables - Should They Merge?

The interesting problem to me was to figure out, okay, well, what if we do have arbitrary shapes or at least shapes that are created at runtime where I couldn't have a design time aspect to the application. So then how could we create the situation that's not going to get us into this? And in general, when we design APIs like this, I think it's fine to be able to say, look, if you have dedicated designers and they have the time and they want to build the best transition possible, they can hand tweak the animation. But wouldn't it be nice contrary to what animated vector variables do if it always worked? Even if it’s not going to