I never used russian client too but we are veterans, we have played english client since release because we had no choice and now english client is better for us. But as a part of russian community i can say that 80% of russians literally dont talk english and cant even read+understand the text and cant play on any other language instead of native. And they will not go to learn english, they will just leave because there are too much defects in this game and it doesnt worth to stay here if ppl cant read new content and understand it. Try to imagine if AoC will be on korean language and may be you will understand.