Adding to Mount functionality

In my brief experience with T2D, Mount has been the most massively useful function available. One of the main goals I have with the Mount system is creating animatable composite objects. Rather than create an animated sprite, I can link all of the animatable elements of an object using Mount, and then create realtime animations. For example, a face would be comprised of the background head with all static elements (hair, nose, ears), with eyes, eyebrows, and mouth mounted to the background head.

Here's where the functionality is a bit restrictive. I can create a pivot point by mounting my object to a hidden pivot object, and then I can rotate my object about this pivot point by rotating the pivot object. Using the example of eyes, mounting the iris to a pivot object at the center of the eyeball allows me to use setAngularVelocity to roll the eyes. But what if I want to animate the movement of the eyes from side to side? I can change the mount point, but this will change the position nonlinearly. This is actually not too bad in practice, but I'd love to see the ability to set parameters for a smoothly changing mount point. Something like setMountLinearVelocity and similar functions.

Thanks for considering my request!