I agree there are slight advantages to images, but there is still something lost in translation.

How would explain a concept such as searching? Or a hyperlink?

Granted those are some contrived examples, but whatever problems we have with text and losses in translation, we'll also have (perhaps to a lesser extent, perhaps to a greater extent) in picture messaging.

These are just my 2 cents.

5000 years from now, I hope we would have advanced enough to instantly translate (correctly) from one language to another. Or just speak one language.