To be real honest, it got such a good features in it, more stable and more option on the theme. The problem is as you know the global ver. not release yet, so using China ver., you can't sign in a certain app, such as McDonald's app and for google Google Chrome, you can't click on block nor allow button whenever popup ads appears.
But still overall it still a good update.
BTW you can easily go back to flyme 7 by downloading the latest update.