there's still lots of korean progamer who put their clan tag infront of their names. e.g cellaWerra, EGidra, liquidhuk, pheonixwerra etc etc.  we want ppl to feel proud to be in this clan. well, like u said "let say in future the player wants to leave the clan"  so let the future decides. + i think blizzard will make the change name again in the future. but whatever it is. ill try to discuss with other clan members about this.