There is beauty in diversity, in the language respect anyway.
One of the purposes in confusing their language was to enforce the divine command: To multiple and fill the earth. At the tower of Babel their express purpose appears to have been to contradict that divine command.
Sure, language has caused many barriers and confusions and I believe, wars. What's that got to do with God? He does something and then we demonstrate time-after-time our inability to handle it. We arrogantly strut our superior intelligence and along comes God to humble us again. We think we have it all and can conquer any challenge (one of the things implied from the tower of Babel). God says: "Yeah, but what if we do this little thing here?"
Imagine, if we suddenly lost something as simple as electricity, for a day, a week, a month, a year. First thing, there go ALL our powerful computers (backup batteries can only last so long). There would be world wide panic, in just about every facet of life. We're back to smoke signals and banging on drums for long distance communication.
We generally feel bad for people who do not have electricity, running water, telephones, etc. But now they will become the lucky ones. It would be a challenge, if you will, that will destroy everything WE think is important.
I hope you understand the point I am making.
The power of Christ's rule is, in part, to demonstrate unifying affects of nations, peoples, and tongues.