The big improvement has been image recognition on produce. It used to be you needed to either know the produce code, or navigate a terrible menu system. Nowadays, you can just put stuff on the scale, hit the camera icon, and have it show you a few possibilities, which is almost always correct.

There was also a long period where the anti theft system would trigger if you breath on the bagging area, and require a staff member to unlock it. They seem to have toned that down a lot. Even when it triggers, it just nags you without locking anything.