While I can appreaciate people have chosen a name that they no longer like. I have to say it does say when your sign up that you will be stuck with the name so any faults with the names is your own.
I also agree if you want a new name that badly, you can always purchase a new licence.
Either way your ursername is your licence name, you can change racername. Unless I was looking up stats for someone I don't look at licence names. I also doubt anyone reads anything too much into the the names.