There is no thing they can do now. May be over time there won't be as much wait. But there was an over population problem for at last the past half year.like for how long the most of the servers are closed to new characters? Even the server I am on is like this and it was a small eu one. Now nee servers can help as there cros server play. Sadly SE as a company is trash,not the devs but the corporate side.
So sadly all you can do is not play for some time(weaks-1 month).
I think SE need to delay the raids for now.