To get the return of the old players have to create something so they have to get back online.
My idea would finally open the D5 with all your stats and Increase the TT 250 or 300. So we have online player in search of honor for D5 and more people lvling.
We have over 150 players max lvl and TT. Sure that at least half will back again to play with the long-awaited opening of the D5.