Seems like WAR might do a comeback indeed.
They preety much fixed performance/lag issues in the upcomming 1.3.1 patch (as of today, its still on the test server).
Soon, there will be another patch (1.4) which will be the major BALANCE patch. Apart from that, they will be holding new Live event soon (Wild Hunt - september).
If they will keep working hard, then WAR might regain it's player base.