What would be an universal depiction of increasing entropy?
You could make a stylized arrow in addition to that, made of dots. The base of the arrow would be smaller with tighter packed dots, and as you progress along to the tip they'd be more spread out. The tip end would be larger than the base.
Then you'd use that stylized arrow for everything in the message. Make sure it's used the same way in all the comics, including the entropy one.
I am still a fan of vitrification and dumping the end results along the subduction zone of a tectonic plate, myself.
Has a very different meaning it drawn left-to-right and they read it right-to-left.
That's the entire point of defining the arrows using entropy.