*sigh*
Everyone needs to relax on this issue as it has been thrown around the chatbox lately. There will be no new Kazekage for Sunagakure. Elder Sage is currently away from his computer, as he is busy in real life, like we all are from time to time. He has told us this and he will be back soon. He is an incredibly dedicated and talented kage, and just because he is away for a little while, doesn't mean we are going to drop him as he does not deserve it.
But there will be the introduction of a temp leader, while he is gone, as you have said there has been an influx in Sand nin. It is undecided yet who will partake in this role, but you will be informed in due course. In the mean time, you need to stop worrying about something that has been explained many times. When the new temp leader is up, they will take control of the village, and it will most likely be the Kazekage's aid. Once Elder Sage returns, then everything will be back to normal.
But until then sit tight. ^^