I continue to feel it's not an overall positive - glitchy, stuttery and slow animations, degraded battery life, UI inconsistencies, touch lag and inaccuracies ( never thought I would say that about iOS ) are all significant downsides for what is essentially a paint job and a one that I happen to not like very much.
But then maybe it works better on newer hardware. This would be the second time in Apple's update history that older devices got a poor update experience.
Curious what new features people like enough to offset the downsides.