Their reverted nerf is a much needed improvement. Though it has also become slightly more difficult to defend oil (and other storages) from breakers + raiders strat, which was actually one of the original complaints that got wall breakers nerfed in the first place. Besides the point that people back then barely had walls above lvl 8 and wall miner to wall sapper upped the amount of walls they broke from one to about five, it's three right now I believe.
What really needs a nerfing is demolition on storages. It's getting to the point of obnoxious when I check up my game to see I've lost double digits of oil in the span of hours. All because it's brainless, and leave the victim of said strat without a PT so the next guy can just waltz in and nab 4-5k easy oil. The one benefit being that the guys who do that strat are often times leaving themselves with hours of retrain time for their tactics, which then leaves them open to being raided or revenged.