No problem here to use that motion tracking and than complete it with help of the scrips already available as default for adding text and some other trial scrips to add media to that tooloption. I would like to show you a screengrab of how to do it but at the moment I am too busy with other things, sorry.
Not exactly intuitive to apply Motion Tracking via Bezier Masking FX .. but actually that is what it is .. tracking a mask .. I'm able to apply it from the event toolbar, or Video FX or any other way you can add FX.