I would expect the T13 bonuses to modify our action priority list and possibly glyph choices too. Feral Spirits will move higher up the list and its also quite possible the MWx_LB will move up as well. I am also wondering if it would be best to use feral spirits outside of lust to minimize wasted MW procs and ultimately achieve more LBs throughout a fight, assuming this offsets the damage loss of un-lusted wolves. I think that all of these optimizations should also be done for us to better quantify the total effect of the T13 set bonuses.
I would say that Earth Shock will be taken off the priority list when wolves are out to accommodate additional LB casts. Either that, or our 4 piece set bonus is so lack luster its not worth using if there are alternative off-pieces for us next tier.