This is interesting to me for two reasons. First, because it's a fairly rapid statement of intent compared to past issues, where months could pass before anyone would address an issue (Thunder Clap only hitting four targets, for example, which was a huge problem for warriors for most of BC) and secondly because it highlights the domino effect that changing class abilities can have and showcases just how difficult class balance really can be. They knew even when they were making the change to Devastate that this might be necessary, but they understandably wanted to roll out any changes in an incremental way.
My expectation is either a threat buff for Revenge (which, frankly, isn't really all that interesting a change), a DPS increase (which isn't likely) or perhaps a small bit of AoE viability like a cleave effect. That last bit would be a good way of adding some AoE bite without replicating the paladin model which we've already been told is a touch over the top.