Are you serious? Does this affect in any way the operation of the camera? Then why 'fix' it. If you really want people to see the impressive labeling, reprint on a clear piece of inkjet label and stick it on. Done...
For some the lettering on the camera can be as important as the colored key caps one buys for Final Cut Pro (or any other NLE). Depending on which letters are going I can easily getting confused over Channel 1 and Channel 2 audio for example.
Since this is a known issue (acknowledged by Sony) the offer for free repair for that specific issue MIGHT be extended beyond warranty period just as the battery drain issue might be. Either of these might not be discovered until after the warranty period depending on one's work habit.
In my case, my work habits did not expose either for the most part. I had one incident where I did leave the battery on on a shoot day that required several locations and noticed the drain but that was not common. I did not experience the letters wearing. Since they were known issues I had both dealt with when I sent in my camera for the firmware upgrade.
I'd suggest you call Sony and strongly state your case. You may find they'll take care of it. The easiest solution would have been to have it taken care of at the time of firmware upgrade. I'm not sure if the later EX1s that shipped with firmware 1.11 exhibit the issue so I'm assuming you did have your firmware upgrade done.