I know the first reaction when someone changes coaches is Orser in this forum.

But I've been thinking..
isn't it or at least equally likely that she might choose to train with Plushenko? He is a skating legend in Russia and does not yet have a champion skater in his camp, so Evgenia would still be treated as the leader. Plushenko is a lot of things but he was an impressive jumper in his prime and you can't beat the Mishin school of training when it comes to jump technique. She does not need to leave her home country and can still maintain support from her federation, which may be in jeopardy if she trains abroad with a non-Russian coach. Even the Yuzuru connection holds strong. Plushenko is his biggest idol after all.