I'm not a huge fan of specs determine the % of casts.
IMO, after all tests are done, EoE should proc equal % for all specs.
By preventing spells from being reduced, it basically is going towards this cookie cutter talents that blizzard is trying to get away from.
EoE appears to be the best choice for Enhancement, but Elemental and Restoration Shamans have all 3 at their liking.
Look at Elemental Shamans, they take a glyph to cast LB on the run and take a 5% reduce cast speed, then they take the talent to basically counter it and allows them to cast instant cast from something like maybe an EQ on the run for that AoE spell needed while you move out of the fire?
EoE sadly is the only thing for Enhancement in that tier. If it has lower procs, that is crazy since we will be cookie cutter into a talent that is vastly weaker than other specs and that is our DPS tier which will be upsetting.
I would love haste to be useful like it is for rogues, dks, ect. so other talents in this tier would be attractive for us. I would love to have 30% haste suddenly boost my damage overall, but as it is, it doesn't.