Overall there are many more practical settings that are available in the new UI. I don't remember everything that wasn't in the previous version, but I don't remember things like line spacing, character spacing, and word spacing. Of course, new features don't have to come at the expense of existing features, especially not when we're comparing page turn animations to text rendering, but as people say, this could be part of a transition to swift, so it's expected that there would be trade-offs in re-implementing features. I'm thinking more people are positively impacted by things like text rendering than page turning.