The game need better core things to do at the end game, making people more inclined to stay.
What those core mechanics would be, i do not know.
But when the DEVS or the community finds out what they are, a wipe would be the best way to launch those features.
On the other hand, the games has got alot more interesting in W10, but you will not see a larger playerbase until you wipe the servers, people want to start on equal terms.