I don't find it annoying.
You'll be calling your oponent's by their class/jobs and not their names.
Actually it's better this way, imagine you want to call out the BLMs name and it's "Ty'hearlytium Saphy'reauinomus" <-- try spelling that out in combat.
I say : Who cares ? Just your oponents name anyway, you can see it on the score after the fight so no problems there.