There’s nothing built in to ease into and out of a pause, but what you can do as a workaround is instead of pausing immediately, you can slow the speed to a stop, then pause.
When you want to pause, you can instead call Float From/To and pass in the other tween’s current time as from and a larger number as to, thus slowing it down. Using on Tween Update, you can set the time variable of the motion tween every frame until it’s slow enough to appear to be stopped and on tween complete for the float tween you can actually pause the motion tween. Then when you want to unpause, first unpause the motion tween then set another float tween in the opposite direction, making the time variable decrease back to its original value.
This is a bit of a convoluted solution, absolutely. It honestly just didn’t come to mind as something people might want to do. I’ll look into the feasibility of adding this as a feature of itween pauses, resumes, and stops.