A toggle option in the settings of teleporters which, upon teleportation, calculates the object’s current directional speed and momentum, and upon teleporting, adds that speed to the teleporting object. Perhaps even an extra toggle that would change the direction relative to the direction of the teleporter destination? This would allow your teleporters to be smoother and less disorienting.
Also having an option to add your own speed to the teleporting object would be cool for Portal-esque physics puzzles.