We'll see, the WD is a crutch, nothing more. if 4 bad players can get top 50 with a WD, 4 good players can get there with a zDps cru/monk. I can permanently CC elites, but cannot stop their affixes, and with the exception of jailer, nothing kills my carries because they aren't bad. Infact, a zdps monk and zdps wizard could nullify elites (albeit with it abit of micro management and skill compared to the WD's pressing 1 button). You don't need a WD, a WD is just an 'easy' mode option.
Best crusader build at the minute is Golden Flence + Denial, only the Raekor barb has Furnace as BiS. With FnR though Raekor is stupid this season, once the wastes/bk hype boils down the leaderboards will be dominated by Raekors again.