Wouldn't surpirse me at all if they end up going that route as Dark Knight was so dominant from release to TOP almost solely on the fact its the only tank that truly operates on a 2m Burst thanks to Living Shadow, Dark Arts and 2 charges of Shadowbringer.
I also think the frankly uneeded potency changes in 6.4 was a result of them looking at TOP numbers without realizing that Dark Knight was using an exploit in that fight for even more damage.