I've been noticing lately that it would be very handy if there was a way to wrap values during a tween, just like the hours on a clock.
9 + 4 hours = 1.
I made a demo that does this for positioning, but it's not very performant because it creates a lot of tweens on every update.
Creating something like that could be greatly simplified if there was a way for GSAP to do that internally. A modulo operator has been proposed for a future version of ECMAScript using this syntax.