I would much rather see spell immunity be taken away from Spellbreakers and replaced with the passive of walkers: resistant skin.
Breakers against Orc are a huge issue. Get 6-8 breakers as HU and Orc can never kill them. Blizzard turned Mountain King into the most overpowered Hero in the game by far with his Thunderclap. This change alone was enough to remove Blademaster from Orc vs HU matchup, as the constant undispellable slow effect and increasing AOE on the entire Orc army makes melee units and BM useless.
However since Orc is playing FS+ TC now, they have no way to deal with Breakers outside of Kodos eating them. This was a problem before, but atleast you had Blademaster for damage against Breakers, but you can’t use BM anymore. Stomp and Chain lightning does nothing to breakers, so you have no damage output against them.
Everyone agrees Breakers and MK are huge imbalance problems in Orc vs HU matchup.