At the moment with the prevalence of white lions, their mobility and their 30ft AOE interrupt, destro are having a difficult time in getting more than 1 tick of a channel off. Whilst destro does have some ways to interrupt, none of them are as prevalent or as easy to use as the WL AOE interrupt.
As this picture I borrowed shows the WL interrupt is far superior.
Proposal is to either make mara interrupt the same as wl or make wl the same as mara - my preference would be the second.