It certainly fixes the above statement. "To each thy own." So why aren't we doing it? It also avoids the space-hogging & awkward "his/her" or "his or her." And moreover, why is "his" usually written first?
Changing "you" to "thee" would provide just the jolt needed to stop moments like "Bless you" (when someone sneezes) from seeming so common. In other words, we hear it so often that it has lost its impact. We damn well expect it. Would you expect "Bless thee"? Nope. Hence, it would draw attention to what's being said and thus re-instate the sentiment lost by over-usage.
Thee is also useful in fun moments such as this passage in Peter and Wendy:
“Proud and insolent youth,” said Hook, “prepare to meet thy doom.”
“Dark and sinister man,” Peter answered, “have at thee.”
It's kind of weird... words go out of usage and then never seem to return. Why do archaic terms cease to be used once they fall from favor? Especially when they could be handy once again! Can they not be resumed in conversation?
I, for one, am going to try and incorporate THY and THEE into my utterings. (Not necessarily in my writing - only if it's warranted there...or if I wind up with a character who feels just as strongly about it.)
So go about thy way and I hope the sheer sense of resurrecting these words will hit thee.