Meh race change if you want i know i have more then i should.
Priest has went ...dwarf, human, gnome, goblin, gnome, draenei, goblin, gnome
All since november too
Pally has been dwarf, human, blood elf, dwarf
Dk has been human, dwarf
Druid male nelf to female
i race change because i can't stand the look of the Race , i leveld my mage as a mage wich was fun , But i'm someon who loves to see the looks of the gear , and gnomes arn't that good at showing gear , So i went humand , Not for racial or anything just because of the Look , I prefer to loose 1k dps then look whole day at somthing i can stand out to look at
I would only do it if it makes your character more enjoyable for you. I have only done two race changes, one for my druid main and another time for my warrior. Both changes have made both characters more enjoyable for me. Both were also better for racials, but that was only part of it for me.