I like the expanded features, but seriously, how can anyone be expected to remember all these gestures? It's hard enough to remember 3D touch sometimes.
It's all about muscle memory. Keep in mind these are Pro features, that is who this is aimed at. For the average user, nothing changes they can still interact with the tablet the same way they have. But for the Pro's, these gestures will be easily adopted and used. Think about all the trackpad gestures, keyboard shortcuts, etc.. that people use and remember.